forces

FORCES

What is a force?

Either a push or pull. there are measured in Newtons (N)

Types of forces:

Gravity

Thrust

Friction

Air resistance (Drag)

Upthrust

What do forces do?

Forces effect how objects move. For example:

Start moving

Move faster

Change direction

Move slower

Stop moving

Change shape

Mass:

The amount of material measured in kilograms. This is the same anywhere in the world.

Weight:

The force which attracts the body. Measured in Newtons. This is caused by the pull of gravity.

On Earth 1 kg = 10N

Weight = Mass x Gravitational Strength

For Every Force There Is An Equal Opposite Force Called Resultant Forces

If an object in stationary and has no resultant force on it the object will continue to stay stationary

If an object is stationary and a resultant force acts on it the object will accelerate in the direction of resultant force

I f an object is already moving and no resultant force acts on it the object will continue to move at the same speed and the same direction

velocity:

Speed with a given direction

Acceleration:

Id how quickly something is speeding up. example- how quickly velocity is changing