Chief Editor
Chief Editor
 Oct 11, 2022
0

Newton's first law of motion is valid only in the absence of? 

Difficulty: Easy
A:

Force

B:

Net force

C:

Friction 

D:

Momentum

Does inertia depend upon?

Difficulty: Easy
A:

Force

B:

Net force

C:

Mass

D:

Velocity 

A boy jumps out of a moving bus. There is a danger of him falling?

Difficulty: Easy
A:

Towards the moving bus

B:

Away from the bus

C:

In the direction of motion

D:

Opposite to the direction of motion

Sponsored AdsHide Ads

A string is stretched by two equal and opposite forces of 10 N each. The tension in the string is?

Difficulty: Easy
A:

Zero

B:

5N

C:

10 N

D:

20N

The mass of a body?

Difficulty: Easy
A:

Decreases when accelerated

B:

Increases when accelerated

C:

Decreases when moving with high velocity

D:

None of the above

Two bodies of masses $m_{1}$ and $m_{2}$ are attached to the ends of an inextensible string passing over a frictionless pulling such that both move vertically. The acceleration of the bodies is?

Difficulty: Hard
A:

$\frac{[(m_{1} \times m_{2})}{(m_{1} +m_{2})]}g$

B:

$\frac{[(m_{1} - m_{2})}{(m_{1} +m_{2})]}g$

C:

$\frac{[(m_{1} + m_{2})}{(m_{1} - m_{2})]}g$

D:

$\frac{[(2m_{1} m_{2})}{(m_{1} + m_{2})]}g$

Sponsored AdsHide Ads

Which of the following is the unit of momentum?

Difficulty: Medium
A:

Nm

B:

$kgm^{-1}$

C:

Ns

D:

$Ns^{-1}$

When a horse pulls a cart, the action is on the?

Difficulty: Easy
A:

Cart

B:

Earth

C:

Horse

D:

Earth and cart

Which of the following material lowers friction when pushed between metal plates?

Difficulty: Easy
A:

Water

B:

Fine marble powder

C:

Air

D:

Oil

Sponsored AdsHide Ads

Top Your Class

Subscribe to the premium package and ace your exams using premium features

Go Premium Now
Go Premium
DynamicsPhysics

Go Premium with just USD 4.99/month!