Scalar – magnitude only

Vector – magnitude, direction and reference point

A distance of 300 m.

A displacement of 300 m due north of Kelso.

quantity symbol unit symbol Scalar/vector

Time t seconds s s

Distance d metres m s

Displacement s metres m v

Speed v metres per

second

m/s s

Velocity v metres per

second

m/s v

quantity symbol unit symbol Scalar/vector

mass m kilograms

kg s

force F newtons N v

acceleration a Metres per sec per sec

m/s2

ms-2

v

energy E joules J s

North000°

020° 010°

North East 045°

060°

030°

070°

080°

East 090°

110°

South East 135°

100°

120°

150° 160°

South 180°

170° 190° 200°

South West 225°

West 270°

North West 315°

Directions can be left/right up/down north/south

3 figure bearings

Find

(a) Distance travelled to plant.

(b) Displacement.

(c) Average speed.

(d) Average velocity.

Time to reach plant is 300s.

Now do the extra sheet on the snail race

Worked example

Brian

North

Using Scale Diagrams

A boy ran 200m due north followed by 200m to the east.

What distance does he travel?

What was his resultant displacement?

If it took 3mins 20 s to run this what was his speed and velocity?

Can you find the displacement without using a scale diagram?

.

Worked example

Tutorial questions page 5 and 6 Qu 4 to 9