Introduction to Laws of Motion for AP EAPCET 2025
Physics is a key section in the AP EAPCET 2025 (Andhra Pradesh Engineering, Agriculture, and Pharmacy Common Entrance Test). Among the various topics covered in the Physics section, Laws of Motion hold immense importance. This topic is not only fundamental to understanding mechanics but also contributes significantly to scoring high marks in the exam.
Mastering the Laws of Motion helps in solving numerical problems, understanding the principles of mechanics, and applying them to real-world situations. Since the AP EAPCET follows a strict time limit, solving Multiple Choice Questions (MCQs) accurately and quickly is essential to securing a top rank.
This guide includes carefully selected MCQs on Laws of Motion with detailed explanations, ensuring that you understand both the concepts and the problem-solving methods. The MCQs are sourced from expert resources, particularly from Neet World, a trusted coaching center known for its high-quality study material and expert guidance.
By the end of this article, you will have a solid understanding of Newton’s Laws of Motion and the ability to tackle any question on this topic with confidence. Let’s dive into the details!
Overview of Newton’s Laws of Motion
Newton’s Laws of Motion are the foundation of classical mechanics and are widely used in physics and engineering. Understanding these laws is essential for solving most mechanics-based problems in AP EAPCET. Let’s go through them one by one:
1. Newton’s First Law of Motion (Law of Inertia)
Newton’s First Law states that:
“An object at rest will remain at rest, and an object in motion will continue in motion with the same speed and in the same direction unless acted upon by an external force.”
This law defines the concept of inertia—the tendency of an object to resist changes in its motion.
- Example:
A soccer ball placed on a smooth field will remain stationary unless someone kicks it. Similarly, if the ball is rolling, it will continue rolling until friction or another force stops it. - Implications in AP EAPCET:
Questions based on the First Law often focus on the role of friction, inertia, and equilibrium.
2. Newton’s Second Law of Motion
Newton’s Second Law states that:
“The rate of change of momentum of an object is directly proportional to the applied force and takes place in the direction of the force.”
The mathematical form of this law is: F=m⋅aF = m \cdot aF=m⋅a
where:
- FFF = Force (in Newton)
- mmm = Mass (in kg)
- aaa = Acceleration (in m/s²)
- Example:
If you push a cart with a force of 10 N and its mass is 2 kg, the acceleration will be:
a=Fm=102=5 m/s²a = \frac{F}{m} = \frac{10}{2} = 5 \, \text{m/s²}a=mF=210=5m/s²
- Implications in AP EAPCET:
Expect numerical problems involving force, mass, and acceleration based on this law.
3. Newton’s Third Law of Motion
Newton’s Third Law states that:
“For every action, there is an equal and opposite reaction.”
This law explains the interaction between two bodies.
- Example:
When you jump off a boat onto the dock, the boat moves backward as a reaction to your jump. - Implications in AP EAPCET:
MCQs on the third law often test conceptual understanding rather than numerical solving.
Types of Questions on Laws of Motion in AP EAPCET
Questions on Laws of Motion in AP EAPCET can be classified into three main types:
1. Conceptual Questions
These questions test your theoretical understanding of Newton’s laws and their real-world implications.
- Example:
“If a ball is rolling on a smooth surface, what will eventually stop it?” - Answer: Friction (based on Newton’s First Law).
2. Numerical Problems
These involve solving equations based on the second law of motion.
- Example:
“A car of mass 1000 kg accelerates at 3 m/s². Find the force acting on it.” - Answer:
F=m⋅a=1000⋅3=3000 NF = m \cdot a = 1000 \cdot 3 = 3000 \, \text{N}F=m⋅a=1000⋅3=3000N
3. Application-Based Questions
These questions require applying the laws to real-life situations.
- Example:
“Why does a rocket lift off the ground?” - Answer: The thrust produced by the rocket engine acts as an action force, and the upward movement of the rocket is the reaction.
Top Laws of Motion MCQs for AP EAPCET 2025
MCQ 1:
An object of mass 5 kg is moving with an acceleration of 2 m/s². What is the net force acting on the object?
- A) 5 N
- B) 10 N
- C) 15 N
- D) 20 N
Answer:
- Correct Option: B
- Explanation:
Using Newton’s second law:
F=m⋅a=5×2=10 NF = m \cdot a = 5 \times 2 = 10 \, \text{N}F=m⋅a=5×2=10N
MCQ 2:
A person standing in a moving bus falls backward when the bus suddenly accelerates. Which law explains this phenomenon?
- A) First Law
- B) Second Law
- C) Third Law
- D) None of the above
Answer:
- Correct Option: A
- Explanation:
The person’s body resists the change in motion due to inertia, which is explained by Newton’s First Law.
MCQ 3:
If action is equal to reaction, why don’t they cancel each other?
- A) They act on different objects
- B) They act on the same object
- C) They act at different times
- D) None of the above
Answer:
- Correct Option: A
- Explanation:
Action and reaction forces act on different objects, which is why they do not cancel each other out.
Detailed MCQ Practice with Answers
MCQs on First Law of Motion
- What happens to a body if no external force is acting on it?
- A) It will come to rest
- B) It will accelerate
- C) It will move with constant velocity
- D) None of the above
Answer: C
- A passenger in a car feels a backward pull when the car accelerates. This is due to:
- A) Newton’s First Law
- B) Newton’s Second Law
- C) Newton’s Third Law
- D) None of the above
Answer: A
MCQs on Second Law of Motion
- A body of mass 4 kg is acted upon by a net force of 16 N. What will be its acceleration?
- A) 2 m/s²
- B) 4 m/s²
- C) 8 m/s²
- D) 12 m/s²
Explanation:
According to Newton’s second law of motion: F=m⋅aF = m \cdot aF=m⋅a Rearranging to find acceleration: a=Fm=164=4 m/s²a = \frac{F}{m} = \frac{16}{4} = 4 \, \text{m/s²}a=mF=416=4m/s² Therefore, the correct answer is 4 m/s².
- A car of mass 1000 kg is accelerating at 2 m/s². Find the force applied to the car.
- A) 500 N
- B) 1000 N
- C) 2000 N
- D) 2500 N
Explanation:
Using the second law of motion: F=m⋅a=1000×2=2000 NF = m \cdot a = 1000 \times 2 = 2000 \, \text{N}F=m⋅a=1000×2=2000N Therefore, the correct answer is 2000 N.
- A force of 50 N is applied to a body of mass 10 kg. What will be its acceleration?
- A) 2 m/s²
- B) 3 m/s²
- C) 4 m/s²
- D) 5 m/s²
Explanation:
According to Newton’s second law: a=Fm=5010=5 m/s²a = \frac{F}{m} = \frac{50}{10} = 5 \, \text{m/s²}a=mF=1050=5m/s² Therefore, the correct answer is 5 m/s².
MCQs on Third Law of Motion
- A gun recoils when a bullet is fired from it. Which law of motion explains this?
- A) First Law
- B) Second Law
- C) Third Law
- D) Law of Inertia
Explanation:
According to Newton’s third law, every action has an equal and opposite reaction. When the bullet is fired (action), the gun moves backward (reaction).
- When a person jumps off a boat, the boat moves backward. This is an example of:
- A) Newton’s First Law
- B) Newton’s Second Law
- C) Newton’s Third Law
- D) Law of Inertia
Explanation:
The action of jumping creates an equal and opposite reaction that pushes the boat in the opposite direction.
- Why don’t action and reaction forces cancel each other?
- A) They act on the same body
- B) They act on different bodies
- C) They are not equal
- D) They act at different times
Explanation:
Action and reaction forces act on different objects, which is why they do not cancel each other out.
Common Mistakes to Avoid in Laws of Motion Questions
Even students with a strong understanding of Newton’s Laws of Motion often make mistakes due to calculation errors or misinterpretation of concepts. Here are the most common mistakes and how to avoid them:
1. Misunderstanding the Concept of Inertia
- Mistake:
Thinking that inertia means a body cannot move unless a force acts on it. - Correction:
Inertia means resistance to change in the state of motion, not the inability to move.
2. Confusion Between Mass and Weight
- Mistake:
Confusing mass with weight in numerical problems. - Correction:
Remember that mass is the amount of matter in an object (in kg), while weight is the force due to gravity acting on mass (in N). W=m⋅gW = m \cdot gW=m⋅g where g=9.81 m/s²g = 9.81 \, \text{m/s²}g=9.81m/s².
3. Wrong Direction of Force
- Mistake:
Misjudging the direction of force or acceleration in vector-based problems. - Correction:
Carefully analyze the problem and the direction of forces before solving.
4. Incorrect Application of Action and Reaction
- Mistake:
Believing that action and reaction forces cancel each other out. - Correction:
Remember that they act on different objects.
Strategies to Improve Your Score in AP EAPCET
Scoring high in the Laws of Motion section requires a clear understanding of concepts and efficient time management. Here’s how you can boost your score:
1. Master the Basics First
- Ensure that you understand the core concepts of Newton’s laws.
- Don’t jump to problem-solving before grasping the fundamentals.
2. Solve Previous Year’s Papers
- Practice at least the last 5 years of AP EAPCET papers.
- Identify patterns and frequently asked questions.
3. Time Management
- Divide your time strategically during the exam.
- Don’t spend more than 1.5 minutes on any single question.
4. Focus on High-Weightage Topics
- Laws of Motion usually contribute 8–10% to the total Physics section score.
- Prioritize mastering this topic.
How to Approach Difficult Laws of Motion Questions
Difficult questions often test both conceptual understanding and problem-solving skills. Follow these steps:
1. Read the Question Carefully
- Identify the type of law being tested.
- Separate known and unknown values.
2. Apply the Right Formula
- Newton’s First Law → Inertia-based questions
- Newton’s Second Law → Force and acceleration problems
- Newton’s Third Law → Action-reaction scenarios
3. Solve Step-by-Step
- Start with what is known.
- Substitute values carefully.
- Double-check units and signs.
4. Eliminate Wrong Options
- If stuck, eliminate options that are clearly incorrect.
- Guess only if you’re down to two choices.
Importance of Coaching for AP EAPCET – Reference to Neet World
Coaching plays a critical role in effective AP EAPCET preparation. Neet World is a trusted name in the field, known for its expert faculty and structured preparation programs. Here’s how Neet World can help you:
✅ Expert Guidance
- Experienced faculty members provide in-depth coaching on physics concepts.
- Doubt-clearing sessions to strengthen weak areas.
✅ Comprehensive Study Material
- Well-organized study material covering all AP EAPCET topics.
- Special focus on high-weightage areas like Laws of Motion.
✅ Mock Tests and Analysis
- Regular mock tests to simulate the actual exam environment.
- Detailed performance analysis and feedback.
✅ Personalized Attention
- Small batch sizes for better focus and personalized feedback.
- Individual performance tracking.
Additional Resources for Laws of Motion Preparation
| Resource Type | Examples |
|---|---|
| Books | HC Verma, DC Pandey |
| Online Resources | Neet World, Physics Galaxy |
| Video Lectures | Khan Academy, Neet World |
| Mock Tests | Neet World Test Series |
Mock Test for Laws of Motion – Free Practice Questions
A mock test is one of the best ways to evaluate your understanding of the Laws of Motion and improve your problem-solving skills under time pressure. Below is a set of MCQs designed to simulate actual AP EAPCET exam conditions. Attempt these questions and check your answers with the provided solutions:
Question 1:
A force of 30 N is applied to a 5 kg object. What is the resulting acceleration?
- A) 3 m/s²
- B) 5 m/s²
- C) 6 m/s²
- D) 7 m/s²
Answer:
- Correct Option: C
- Explanation:
Using Newton’s second law:
F=m⋅aF = m \cdot aF=m⋅a a=Fm=305=6 m/s²a = \frac{F}{m} = \frac{30}{5} = 6 \, \text{m/s²}a=mF=530=6m/s²
Question 2:
A car of mass 1500 kg is accelerating at 2 m/s². What is the force acting on the car?
- A) 2500 N
- B) 3000 N
- C) 3500 N
- D) 4000 N
Answer:
- Correct Option: B
- Explanation:
Using the second law of motion:
F=m⋅a=1500×2=3000 NF = m \cdot a = 1500 \times 2 = 3000 \, \text{N}F=m⋅a=1500×2=3000N
Question 3:
A 10 kg object is at rest. How much force is needed to accelerate it at 5 m/s²?
- A) 40 N
- B) 45 N
- C) 50 N
- D) 55 N
Answer:
- Correct Option: C
- Explanation:
Using the formula:
F=m⋅a=10×5=50 NF = m \cdot a = 10 \times 5 = 50 \, \text{N}F=m⋅a=10×5=50N
Question 4:
When a person pushes against a wall, the wall pushes back with equal force. Which law explains this?
- A) First Law
- B) Second Law
- C) Third Law
- D) None of the above
Answer:
- Correct Option: C
- Explanation:
This is an example of Newton’s Third Law of Motion, which states that every action has an equal and opposite reaction.
Question 5:
An object is moving with constant velocity. What is the net force acting on it?
- A) Zero
- B) Constant
- C) Increasing
- D) Decreasing
Answer:
- Correct Option: A
- Explanation:
According to Newton’s First Law, if an object is moving with constant velocity, the net force acting on it is zero because no external force is causing acceleration.
Time Management Tips for Physics Section in AP EAPCET
Effective time management is essential to perform well in AP EAPCET, especially in the Physics section where calculations and problem-solving consume significant time. Follow these strategies to maximize your score:
✅ 1. Start with Easy Questions
- Begin with questions you are confident about.
- This helps you save time and build momentum for more challenging problems.
✅ 2. Allocate Time for Each Section
- Physics section has around 40 questions.
- Target solving each question in 1.5 minutes to finish within the allotted time.
✅ 3. Skip and Return Strategy
- If a question seems difficult, skip it and move on.
- Return to it after solving the easy ones to avoid losing valuable time.
✅ 4. Use the Elimination Method
- If you’re unsure about the answer, try eliminating obviously wrong options.
- This increases your chances of selecting the correct answer even when guessing.
✅ 5. Keep 5 Minutes for Review
- Reserve the last 5 minutes to review flagged questions.
- Double-check calculations and ensure you haven’t left any question unanswered.
Expert Tips from Neet World for Cracking AP EAPCET 2025
Top scorers often credit their success to strategic preparation and expert guidance. Here’s how Neet World helps students ace AP EAPCET:
🌟 1. Structured Learning
- Neet World offers a well-designed syllabus that covers all AP EAPCET topics.
- Special focus is given to high-weightage areas like Laws of Motion.
🌟 2. Regular Assessments and Feedback
- Weekly tests and mock exams simulate real exam conditions.
- Detailed feedback helps students identify and improve weak areas.
🌟 3. Experienced Faculty
- Neet World’s physics experts provide in-depth explanations of complex topics.
- One-on-one doubt-clearing sessions for personalized learning.
🌟 4. Focus on Concept Clarity
- Neet World emphasizes building a strong conceptual foundation.
- Shortcuts and problem-solving techniques are shared to save time in exams.
🌟 5. Stress Management and Motivation
- Exam stress can affect performance; Neet World provides regular motivational sessions.
- Mindfulness techniques are taught to help students stay calm during exams.
FAQs on Laws of Motion for AP EAPCET
1. How important are Laws of Motion in AP EAPCET?
Laws of Motion are one of the most important topics in the Physics section of AP EAPCET. Typically, around 4–6 questions are asked on this topic every year, making it a high-weightage area.
2. What is the best way to prepare for Laws of Motion?
- Start by understanding the basic concepts of Newton’s laws.
- Practice numerical problems and application-based questions.
- Take mock tests to evaluate your preparation level.
3. How can I avoid calculation errors in physics?
- Write down all known and unknown values clearly.
- Double-check units and signs before solving.
- Avoid skipping steps while solving numerical problems.
4. Are MCQs on Laws of Motion conceptual or numerical?
AP EAPCET asks a mix of both conceptual and numerical questions.
- Conceptual questions test your understanding of theory.
- Numerical questions require solving using Newton’s formulas.
5. How can Neet World help with Laws of Motion preparation?
Neet World provides expert coaching, detailed study materials, and regular practice tests focused on Laws of Motion. Their experienced faculty members simplify complex concepts and provide strategic tips to tackle tricky questions.
Conclusion
Mastering the Laws of Motion is essential for excelling in the Physics section of AP EAPCET 2025. Newton’s three laws form the foundation of classical mechanics and are frequently tested in both conceptual and numerical formats. Understanding these laws deeply and practicing MCQs regularly will significantly improve your problem-solving ability and speed.
Enrolling in a professional coaching program like Neet World can further enhance your preparation by providing expert guidance, structured learning, and strategic exam tips. Consistent practice, time management, and smart guessing strategies will help you maximize your score and secure a top rank in AP EAPCET 2025.
Final Tip:
Keep practicing, stay confident, and trust your preparation. You’ve got this!
