mechanics (mass, force, acceleration, work, energy, momentum, velocity) - Category wise Question and Answer Practice Test with Solutions

Question : 26

On the basis of following features identify the correct option. A. It is measured in units of kg m/s. B. Its direction is same as that of velocity of body.

a) Both A and B

b) Inertia

c) Momentum

d) Neither A and B

Question : 27 [IAS (Pre) 1997]

If the number representing volume and surface area of a cube are equal, then the length of the edge of the cube in terms of the unit of measurement will be

a) 5

b) 4

c) 3

d) 6

Question : 28

Consider the following statements :

1. Action and reaction act on the same body.
2. Volume is a measure of the inertia of a body.

a) 1 and 2 both

b) 1 only

c) 2 only

d) None

Question : 29

Thomas and Mary are playing carom board. They arrange the seeds in the vertical order. Thomas strikes on the seeds with the striker, with a great speed. He finds that, the stakes do not fall down. On the other hand, when he strikes the seeds with less speed, all the seeds of the stakes fell down. Which property of force this shows?

a) Inertia

b) Motion

c) Newton’s third law

d) Reaction of force

Question : 30 [NDA]

When a moving bus suddenly applies brakes, the passengers sitting in it fall in the forward direction. This can be explained by

a) Newton’s second law

b) Newton’s first law

c) the theory of relativity

d) Newton’s third law