Chapter 33 - Motion

Question 1

Speed

Answer 1

The distance travelled by an object in one unit of time

Question 2

How do you calculate speed?

Answer 2

distance
Speed = ————-
time

Question 3

What are the units of speed?

Answer 3

• m/s

* ms¯¹

Question 4

Change 100cm to metres

Answer 4

1 metre

Question 5

Change 70cm to metres

Answer 5

0.7m

Question 6

Change 16cm to metres

Answer 6

0.16m

Question 7

Change 1km to metres

Answer 7

1000m

Question 8

Change 4km to metres

Answer 8

4000m

Question 9

Change 7.5km to metres

Answer 9

7500m

Question 10

Velocity

Answer 10

Velocity is the speed of the object and the direction in which it is travelling. It’s usually north, south, east or west

Question 11

Acceleration is about…

Answer 11

Acceleration is about the change in speed

Question 12

How do you calculate acceleration?

Answer 12

time taken for change in speed

Question 13

What are the units for acceleration?

Answer 13

m/s²

ms¯²

Question 14

The slope of a distance-time graph corresponds to the _______ of the object

Answer 14

speed

Question 15

The slope of a speed-time graph corresponds to the _______ of the object

Answer 15

acceleration