Speed

Question 1

How do we define speed?

Answer 1

Speed is a measure of how far you travel in a set time.

Question 2

What do these units mean?
M/s
M/h
Km/h

Answer 2

Metres per second
Miles per hour
Kilometres per hour

Question 3

A hooligan sheep is skateboarding down a farmers track. It takes 5 seconds to travel 10 metres. How fast is the sheep going?

Answer 3

2m/s

Question 4

A speedy campervan is zooming down the motorway. It travels 15 miles in 30 minutes.
What is its speed in mph?

Answer 4

Either turn 30 mins into hours = 0.5 h

So the answer is 30mph

Question 5

On a distance time graph what measure always goes up the side?

Answer 5

distance

Question 6

On a distance time graph what measure is across the bottom?

Answer 6

Time

Question 7

What does a horizontal line mean on a distance time graph?

Answer 7

There is no movement. You are stationary.

Question 8

A diagonal line on a distance time graph means…..

Answer 8

You are travelling at a steady speed

Question 9

When you have a steep line you are travelling…….

Answer 9

Faster

Question 10

A downhill slope means..
A. You are slowing down
B. You are going backwards
C. You are travelling back to your starting point

Answer 10

C. Travelling at a steady speed back to where you started.

Question 11

A steep curve means an object is

Answer 11

Accelerating

Question 12

A curve represents

Answer 12

Changing speed

Question 13

A curve that levels off is showing

Answer 13

Decelerating. ( slowing down)

Question 14

What is relative motion?

Answer 14

When you want to know the speed of something when you are moving too.

Question 15

If two objects are moving in opposite directions on the same straight line, how do you calculate their relative motion?

Answer 15

You add their speeds together.

Question 16

To calculate the relative motion of objects travelling in opposite directions you must…

Answer 16

Subtract the speeds.