Quiz GP 1

If a car starts from rest and accelerates uniformly at 2 m/s² for 5 seconds, what is its final velocity in m/s?

(a)  

A man walks 3 m north and then 4 m east. What is his displacement in meter?

(a)  

A stationary player of mass 70 kg catches a 0.5 kg ball moving at 30 m/s. What is the velocity in m/s of the player and ball after catching?

(a)  

Define gravitational field strength. It is the force:

• Exerted on a mass by the Earth's magnetic field

• Exerted on a mass by a gravitational field per unit volume

• Exerted on a mass per unit mass by a gravitational field

• Exerted by a mass in its motion

Newton’s third law states:

• An object at rest stays at rest.

• For every action, there is an equal and opposite reaction.

• Force equals mass times acceleration.

• The momentum of a system remains constant

Which of the following is an example of Newton’s third law?

• A car accelerating forward when brakes are applied.

• Pushing a wall, and the wall pushes back.

• A stationary object remaining at rest.

• A moving object continues to move

A graph of force (F) versus elongation (x) gives the slope of:

• Gravitational acceleration

• The spring constant

• The potential energy

• The displacement

Uniform acceleration is:

• A change in velocity at a constant rate

• Movement without force

• A motion in a straight line

• Acceleration that doubles at every point

In an inelastic collision:

• Kinetic energy is conserved.

• Momentum is conserved but kinetic energy is not.

• Both momentum and kinetic energy are conserved.

• Neither momentum nor kinetic energy is conserved

What is potential energy?

• Energy possessed due to motion

• Energy due to position

• Energy lost during collisions

• Energy from friction