Forces, Friction, and Gravity

Front

What is friction?

Back

It is a resistance force.

Front

What is the force acting between any two objects in the known universe all the time?

Back

Gravitational Force.

Front

How do you lower the friction force?

Back

By a smooth surface.

Front

If you push on a tree with 20 N of force and the tree doesn't move, how much force is the tree pushing back on you with?

Back

20 N.

Front

What changes as you walk around the surface of another planet - your mass or your weight?

Back

Weight.

Front

What is gravitational force?

Back

It is the force of attraction between two masses.

Front

What factors affect the force of friction?

Back

The nature of the surfaces in contact and the normal force.

Front

What is normal force?

Back

It is the force exerted by a surface to support the weight of an object resting on it.

Front

What happens to your weight if you go to the Moon?

Back

Your weight decreases due to the Moon's lower gravitational pull.

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on mass.