# Forces and motion!

### Description

IGCSE complete physics for igcse o level unit 2 Forces and Motion
Mind Map by Raya Sawalha, updated more than 1 year ago Created by Raya Sawalha almost 8 years ago
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## Resource summary

Forces and motion!
1. Speed, velocity &acceleration
1. speed
1. average speed =distance moved/time taken
1. on most journeys, the speed of a car varies, so the acctual speed is usually different- than the average speed
1. it is a SCALAR quantity
1. measured in m/s
2. velocity
1. velocity means the speed fof something AND its direction of travel
1. it is a VECTOR quantity
1. measured in m/s
2. acceleration
1. something is accelerating if its velocity is changing
1. average acceleration = change in velocity/ time taken
1. a = v-u / t
1. u= initial velocity, v= final velocity
1. measured in m/s^2
2. Free Fall
1. The acceleration of free fall, g
1. Acceleration of free fall is the same for ALL objectrs falling nearthe earth's surface.
1. The acceleration of free fall is represented by the symbol g , its value varies slightly from one place to another beausethe earths gravitational pull varies the simple figure used for equations is 10m/s^2
2. up and down

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