Ultimate Year 7 Physics Flashcard

Front

What is the effect of using ball bearings in machinery?

Back

Reduces friction.

Front

What is the net force on an object if two forces of 10 N and 10 N act in the same direction?

Back

20 N.

Front

What is the magnitude of the resultant force when two forces, 30 N and 10 N, act on an object in opposite directions?

Back

20 N.

Front

What is the name of the spring balance used to measure forces?

Back

Newtonmeter (or forcemeter).

Front

What is the net force on an object if two forces of 10 N and 10 N act in opposite directions?

Back

0 N.

Front

What is friction?

Back

A force that opposes the motion of an object.

Front

What is net force?

Back

The overall force acting on an object when all the individual forces are combined.

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N).

Front

What happens to the net force if two equal forces act in opposite directions?

Back

The net force is zero.

Front

How do you calculate the resultant force when two forces act in the same direction?

Back

Add the magnitudes of the forces.