Quiz on Work and Power

When a force acts on an object and displaces it in the direction of the force, then ___ is done on the object.

• Force

• Gravity

• Power

• Work

The SI unit for work is ___________ also defined as joule (J).

• Newton

• Newton-meter

• Kilogram

• Meter

When the object falling on the earth is in the direction of the force of gravity is an example of _________.

• Work is done.

• No work is done.

• Both A and B

• None of the choice

What is the product of a force and displacement in the direction of the force called?

• Gravity

• Force

• Motion

• Work

A player kicking the football in the direction of motion indicates ______.

• Both B and C

• Work is done.

• No work is done.

• None of the choices

A force of 50 N was applied to push a box along a friction-less horizontal surface through a displacement of 3 m. What was the work done on the box?

• 100 J

• 150 J

• 200 J

• 50 J

A nurse moving the patient in the wheelchair is an example of _________.

• None of the choices

• Work is done.

• Both B and D

• No work is done.

A force of 75 N was applied to push a broken vehicle on the road, moving forward through a displacement of 5 m. What was the work done on the box?

• 345 m

• 375 J

• 275 m

• 377 J

Work is done when __________.

• A person riding a skateboard.

• A person carrying a box of apples.

• When a child holds a balloon while walking.

• When running and holding your bag.

Cutting the vegetables using the knife is an example of ______.

• Work is done.

• No work is done.

• Both A and B

• None of the choices