4.5.6.1.2 Speed

Question 1

Speed:

Answer 1

• describes how fast an object is moving
• scalar quantity

Question 2

Formula for speed:

Answer 2

• speed (m/s) = distance travelled (m) / time taken (s)
• V = s/t

Question 3

Formula for average speed:

Answer 3

average speed = total distance travelled / total time taken

Question 4

Describe the speed of a moving object:

Answer 4

• the speed of a moving object is rarely constant
• when people walk, run or travel in a car their speed is constantly changing

Question 5

Factors affecting the speed at which a person can walk, run, or cycle:

Answer 5

• age
• terrain
• fitness
• distance travelled

Question 6

What are speed and velocity both a measure of?

Answer 6

how fast an object is travelling

Question 7

Typical speed values: walking

Answer 7

1.5 m/s

Question 8

Typical speed values: running

Answer 8

3.0m/s

Question 9

Typical speed values: cycling

Answer 9

6.0m/s

Question 10

Typical speed values: car speed

Answer 10

• (30mph - 70mph)
• 13m/s to 30m/s

Question 11

Typical speed values: speed of sound

Answer 11

330m/s - 340m/s

Question 12

What else has varying speed other than moving objects?

Answer 12

• It is not only moving objects that have varying speed
• The speed of sound and wind also vary