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CBSE - Force
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Practice Question
Force
.
Force
A bullet in motion hits and gets embedded in a solid resting on a frictionless table. What is conserved ?
(1) Momentum and K.E.
(2) Momentum alone
(3) K.E. alone
(4) None of these
Correct Answer: 2
.
Related Questions
Force
1
The law of conservation of momentum holds for:
(1) Individual particles
(2) Only for two particles
(3) A system of particles
(4) Only for three particles
Correct Answer: 3
2
9.8 N is equal to-
(1) 1 kgf
(2) 1 kgwt
(3) A and B both
(4) Neither A nor B
Correct Answer: 3
3
Inertia of rest is the property by virtue of which the body is unable to change by itself:
(1) the state of rest only
(2) the state of uniform linear motion
(3) the direction of motion only
(4) the steady state of rest
Correct Answer: 4
4
What force can change the velocity of a body of mass 1kg from 20 m/s to 30m/s in two seconds?
(1) 10 N
(2) 15 N
(3) 5 N
(4) 25 N
Correct Answer: 3
5
If a moving ball A collides with another moving ball B, then
(1) momentum of A = momentum of B
(2) (momentum A + momentum of B) before collision = (momentum A + momentum of B) after collision
(3) neither A nor B
(4) A or B both are possible
Correct Answer: 2
