Interactions through application of forces - Part 1

Front

What is a force?

Back

a push or pull

Front

Which of the following is NOT an effect of a force?

• change the speed of a moving object
• change the direction of a moving object
• change the size and shape of an object
• change the mass of an object

Back

change the mass of an object

Front

What is the unit of force?

Back

newton

Front

A car travelled 100 km at a speed of 50 km/h. How long did the journey take?

Back

2.0 h

Front

Which of the following is a contact force? gravity, magnetism, friction

Back

friction

Front

Friction is a force that acts in a/an ___________ direction of movement.

Back

opposite

Front

Rougher surfaces have ...

Back

greater friction

Front

The amount of friction depends on the weight of the objects pressing together.

Back

True

Front

The amount of friction depends on the surface area in contact with the ground.

Back

False

Front

Example of friction that is harmful: Pencil marking on paper, Engine parts wearing out, Brakes on a bicycle, Using an eraser to erase marks

Back

Engine parts wearing out