The railway trucks of masses m and 3m move towards each other in opposite directions with speed 2v and v respectively. These trucks collide and stick together. What is the speed of the trucks after the collision?
Correct answer: A. V/4
- A. V/4
- B. V
- C. V/2
- D. 5V/4
Explanation
This is a perfectly inelastic collision. Please refer to the calculation given below.
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 gun after firing recoils due to:
A man leaves his house for a cycle ride. He come back to his house after half an hour after covering a distance of one km. What is his average velocity for the ride?
A body can have constant velocity when it follow as:
At maximum height on the trajectory, which of projectile becomes zero:
Two projectiles are projected at angle of 200 and 700 with same velocity which one have longer range?
A ball is projected horizontally from the top of a cliff on the surface of the earth with a speed of 40 ms-1. Assuming that there is no air resistance, what will be its speed after 3s?