Consider an object placed on a frictionless inclined plane at a height of 5m , if it is released, what will be its velocity at the bottom of the inclined plane?
Correct answer: B. 10 m/s
- A. Insufficient information
- B. 10 m/s
- C. 100 m/s
- D. 20 m/s
Explanation
Due to friction less surface, Loss of potential energy = Gain of kinetic energy mgh = 1⁄2 mv2, gh = 1⁄2 v2,v = √(2gh) , v = √(2x10x5), v= 10m/s.
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
Third law of Newton is also called:
A rider on a horse back falls when the horse starts running all of a sudden because:
A bullet with a velocity of 100 m/s can just penetrate 2 planks of equal thickness. What is the number of planks penetrated if the velocity of the bullet is doubled?
A ball is thrown vertically upward with the velocity of 98 m/sec, how high does the ball rise?
A body is moving with a speed of 1ms⁻¹ and a force F is needed to stop it in a distance x. If the speed of the body is 3 ms⁻¹, the force needed to stop it in the same distance x will be:
Bullets of 0.03 kg mass each hit a plate at the rate of 200 bullets per second with a velocity of 30 m/s. Their average force acting on the plate in "N" is: