The displacement of particles as a function of time is shown in the figure. The figure shows:
Correct answer: A. The particle starts with certain velocity, motion is retarded, and finally the particle stops
- A. The particle starts with certain velocity, motion is retarded, and finally the particle stops
- B. The velocity of the particle is constant throughout
- C. The acceleration of the particle is constant throughout
- D. The particle starts with constant velocity, then motion is accelerated, and finally the particle moves with another constant velocity
Explanation
The displacement-time curve starts steep and gradually flattens out. This means the rate of change of displacement (i.e., velocity) is decreasing over time. Eventually, the curve approaches a horizontal line, indicating zero velocity. Option A because the curve shows deceleration (negative acceleration), and the particle eventually comes to rest.
Last updated
About Force and Motion
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.
Practise Force and Motion
1,416 free Force and Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
(1, 1, 1) . (2, 2, 2)
1st law of motion gives the definition of:
2nd law of motion measures which quantity?
7.0 kg bowling ball experience a net force of 5.0N. What will be its acceleration?
A 0.2 kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at 30m/s and rebounds up at 20m/s. The impulse on the ball during the collision is: