### SAT - Science - Physics - Force

#### Question - 1

Momentum is a measure of

• A mass
• B quantity of motion
• C Weight
• D velocity

#### Question - 2

A body of mass M collides against a wall with velocity u and rebounds with the same speed. Its change in momentum

• A -Mu
• B zero
• C 2Mu
• D Mu

#### Question - 3

How much force is required to change the velocity of a body of mass 2 kg from 40 m/s to 50 m/s in 5 seconds?

• A 4N
• B 8N
• C 10N
• D 6N

#### Question - 4

If the momentum of the body is doubled, the kinetic energy becomes

• A doubled
• B remains same
• C halved
• D 4 times

#### Question - 5

A ball moving at a speed of 20 m/s is hit with an object so that its velocity becomes 25 m/s. If the mass of the ball is 150 gm, the impulse imparted to the ball is

• A 0.75 Ns
• B 2.5 Ns
• C 1.5 Ns
• D 0.5 Ns

#### Question - 6

For a body moving in a circular path with a constant speed, the velocity

• A zero
• B constant
• C changes
• D remains the same

#### Question - 7

The force acting on a mass of 1 gm due to the gravitational pull on the earth is called 1g wt one g wt equals

• A 1N
• B 980 dynes
• C 9.8 N
• D 98N

#### Question - 8

In a tug of war between the teams A and B. The rope breaks at a point which is nearer to A. Then

• A A has applied more force
• B B has applied more force
• C A and B both have applied more force
• D None has applied any force

#### Question - 9

A body is said to be under balanced forces when the resultant force acting on the body is

• A zero
• B unity
• C infinity
• D none of these

#### Question - 10

Internal forces are

• A imbalanced force
• B balanced force
• C resultant force
• D equilibriant force     