Laws Of Motion

Physics
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The combined effect of mass and velocity is taken into account by a physical quantity called:

A
Moment of momentum
B
Moment of force
C
Momentum
D
None of these 
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Which of following Newton's laws reveals the underlying symmetry in the forces that occur in nature?

A
First law
B
Second law
C
Third law
D
Law of gravitation
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When a moving body is suddenly stopped, then:

A
Frictional force increases.
B
Friction force remains same as it was while the car was moving.
C
Friction force reduces but has a non zero value.
D
Frictional force reduces to zero as it is a self adjusting force.
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Momentum has the same units as that of:

A
impulse
B
torque
C
moment of momentum
D
couple
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Impulse is equal to

A
momentum
B
change in momentum
C
rate of change of momentum
D
rate of change of force
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Momentum is a measure of:

A
weight
B
mass
C
quantity of motion
D
velocity
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In which of the following cases the net force is not equal to zero?

A
A kite skillfully held stationary in the sky.
B
A ball falling freely from a height.
C
A helicopter hovering above the ground.
D
A cork floating on the surface of water.
Easy
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