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1

## Scalar Quantities

Only has a magnitude (size)
Examples-Distance, speed, time, mass, energy , power

2

## Vector Quantities

Has a magnitude and direction
Examples - Displacemet, velocity, acceleration,force,momentum,impulse

3

## Acceleration

a=(v-u)/t

4

## Equations of motion - Definitions

s- displacement of object in time
u- initial velocity of object
v- final velocity of object
a- acceleration of object
t- time to accelerate

5

## Equations of motion Only apply to constant acceleration , straight line

v=u+at
s-ut+1/2(at)²
v²=u²+2as
s= (u+v)t/2

6

## v=u+at

Derived from acceleration equation a=v-u/t

7

## s=ut+1/2at²

Derived from speed-time graph
s= areaA+ areaB
s=ut +1/2(v-u)t
s=ut+1/2(at)t
s=ut+1/2(at)²

8

## v²=u²+2as

Derived from equations one and two
v²=(u+at)²
=u²+2uat+a²t²
=u²+2a(ut+1/2at²)
=u²+2as

9

## Newtons Second Law

F=ma

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