If the change in momentum with respect ot time is zero then
Correct answer: C. Momentum is constant
- A. Some force acts
- B. Momentum is zero
- C. Momentum is constant
- D. Force changes
Explanation
The correct answer is that the momentum is constant. The rate of change of momentum with respect to time is equal to the force acting on the object according to Newton's second law. If this rate of change is zero, it means that no net force is acting on the object, thus the momentum remains constant. Option A is incorrect because if a force acts, it would cause a change in momentum. Option B incorrectly assumes that zero change in momentum implies zero momentum, which is not necessarily true. Option D is incorrect because a changing force would imply a changing momentum.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Force and Motion questions
A string passes over a smooth pulley and carries a 2 Kg mass at one end and 1 Kg mass at the other. What is the acceleration of the masses?
The force which will accelerate a 10 Kg mass at 98 cm/sec2 on a smooth horizontal plane is
An object whose mass is 100 gm starts from rest and moves with constant acceleration of 20 cm sec2 at the end 8 sec its momentum is in gm. cm /sec
When a falling object reaches a speed where the force of ait resistance is equal to its weight it
the bullet fired from a gun has momentum, which is
If the values of instantaneous and average velocities are equal, the body is said to be moving with