KS3 Y9 Speed and Acceleration

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acceleration an average distance distance travelled divide down faster hour how fast kilometers per hour metre per second per second metres per second miles miles per hour moving not slowing down Speed speed speed changes speeding up start time top total up zero

9Ka Speed and Acceleration

tells us something is . It is the in a unit of . Best known as equals divide by .

For example if a car covers the distance of thirty in one we say its speed is thirty . Hour is a unit of time in this case.

Also if a car travels a distance of 120 miles in a time of 4 hours, even though it might s, again, slow and speed in some places its or me speed will be 120 miles divided by 4 hours which will give us 30 .

Speed is also measured in because somethings do travel very very fast. We now also use kilometers to measure distance when travelling in cars or coaches. The unit in this case would be .

Because speed equals divide by , distance equals times and the time equals divide by .

Sometimes things start to move and over a period of time. We call this .

A car for example at rest is moving. So it has a speed of .

Then it starts off slowly and slowly but surely get faster as time passes by.

Acceleration is tells us how over a period of time.

Acceleration is change of speed by the time period when the change in speed is noted.

The unit of acceleration is usually .

If the value of acceleration has a positive value it is .
If the value of acceleration has a negative value it is .

KS3 Y9 Speed and Acceleration

Gap-fill exercise.Name:_________________________Class:___________________Date:__________________

Gap-fill exercise.

Name:_______________Class:_Date:__________