Forces

What can forces do?

• make things start or stop moving

• change the shape of things

• make moving things change direction

• all of the above

Which answer shows three non-contact forces?

• magnetism, gravity, friction

• gravity, friction, upthrust

• gravity, static electricity, magnetism

• upthrust, static electricity, friction

What are the units used for measuring forces?

• metres

• newtons

• kilograms

• grams

Which statement is true?

• Your weight would be the same on the Earth and on the Moon.

• Your mass would be the same on the Earth and on the Moon.

• Your weight would be more on the Moon than on the Earth.

• Your mass would be less on the Moon than on the Earth.

What is used to measure forces?

• a force meter with a spring inside

• a force meter with string inside

• a ruler

• a clamp and stand

An elastic material:

• does not stretch.

• stretches and stays in its new shape.

• stretches and then goes back to its original shape.

• cannot be squashed.