Free Force and Motion MCQs with Answers
1,416 Force and Motion MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
Last updated
1,416 questions · page 45 of 71
- A. A
- B. B
- C. C
- D. D
Explanation: The time taken to reach maximum height is given as follows;
Correct answer: B- A. The projectile fired at 200 has a longer range
- B. Both projectiles have the same range
- C. The projectile fired at 700 has a longer range
- D. None of these
Explanation: Both projectiles have the same range because they are launched at complementary angles (200 and 700) with the same initial velocity.
Correct answer: Both projectiles have the same range- A. The horizontal component of the projectiles acceleration is zero
- B. The kinetic energy of the projectile is zero
- C. The horizontal component of the projectile's velocity is zero
- D. The momentum of the projectile is zero
Explanation: The horizontal component of the projectile's acceleration is zero at point Q.
Correct answer: The horizontal component of the projectiles acceleration is zero- A. 20 m/s
- B. 6067 m/s
- C. 60 m/s
- D. 29.4 m/s
Explanation: The key principle in projectile motion is that the horizontal component of the velocity remains constant if there is no air resistance.
Correct answer: 20 m/s- A. 450
- B. 300
- C. 600
- D. None
Explanation: In projectile motion, the range is maximum when the launch angle is 450 in the absence of air resistance.
Correct answer: 450- A. Horizontal, 9.8 ms-2 Vertical, 9.8 ms-2
- B. Horizontal, 0 Vertical, 9.8 ms-2
- C. Horizontal, 9.8 ms-2 Vertical, 0 ms-2
- D. Horizontal, 0 Vertical, 0
Explanation: In projectile motion, when a bullet is fired horizontally, the only force acting on it after being fired is gravity, which causes a…
Correct answer: Horizontal, 0 Vertical, 9.8 ms-2- A. v
- B. -v
- C. Zero
- D. None of the above
Explanation: The correct answer is Zero. Relative velocity is the velocity of one object as observed from another.
Correct answer: Zero- A. A
- B. B
- C. C
- D. D
Explanation: The angle made by Y along the x-axis is 60 degrees. So tan 60 = √3 The angle made by X along the x-axis is 30 degrees.
Correct answer: A- A. 70o
- B. 40o
- C. 55o
- D. 25o
Explanation: as R=vi 2 sin20/g all the projectiles have same speed so, R∝sin20 Range will be greater for the angle whose sin20 value will be greater…
Correct answer: 40o- A. K.E
- B. 0.75 K.E
- C. 0.5 K.E
- D. 0.25 K.E
Explanation: The correct answer is option C: 0.5 K.E. When a projectile is launched to achieve maximum horizontal range, it is fired at a 45° angle.
Correct answer: 0.5 K.E- A. 8 ms-1
- B. 6 ms-1
- C. 7 ms-1
- D. 5 ms-1
Explanation: To determine the average velocity when a car travels equal distances at different speeds, use the harmonic mean formula for average…
Correct answer: 5 ms-1- A. A
- B. B
- C. C
- D. D
Explanation: The explanation for this question has been added. View the attached image.
Correct answer: D893. A force of 5 newton acts on a body of weight 9.8 Newton. What is the acceleration produced in ms-2?
- A. 0.51ms-2
- B. 1.46ms-2
- C. 49.00ms-2
- D. 5.00ms-2
Explanation: To find the acceleration, we apply Newton's second law: F = ma, where F is the force applied, m is the mass, and a is the acceleration.
Correct answer: 5.00ms-2- A. A
- B. B
- C. C
- D. D
Explanation: The explanation for this question has been added in the attached image.
Correct answer: B- A. 7cm
- B. 9cm
- C. 8cm
- D. 12cm
Explanation: Option C is correct.The displacement of a body is the shortest distance between its initial and final positions.
Correct answer: 8cm- A. 0o
- B. π/2 rad
- C. π rad
- D. 2π rad
Explanation: Option C is correct. According to Newton's third law of motion, every action force has an equal and opposite reaction force.
Correct answer: π rad- A. K.E, cos2θ
- B. K.E, tanθ
- C. K.E, sin2θ
- D. K.E, cotθ
Explanation: Option C is correct. At maximum height, the projectile's vertical velocity is zero, and its potential energy (PE) is maximized.
Correct answer: K.E, sin2θ- A. 15 ms-1
- B. 25 ms-1
- C. 10 ms-1
- D. 6 ms-1
Explanation: Option C is correct.In this case, the collision is inelastic, which means that some kinetic energy is lost.
Correct answer: 10 ms-1- A. 8i+10j
- B. 8i+2j
- C. 2i-2j
- D. 2i+3j
Explanation: Option D is correct.The displacement vector is the difference between the initial and final positions of the body.
Correct answer: 2i+3j- A. 6m/s
- B. 2m/s
- C. 8/3m/s
- D. 3/8m/s
Explanation: Option C is correct.Given data: v1= 2ms-1 , v2=4ms-1Find out:Average velocity=?Solution:For equal distances S1=S2Vav= 2v1v2/v1+v2…
Correct answer: 8/3m/s