P2.1 Motion

Question 1

How do you work out speed?

Answer 1

Speed = distance/time

Question 2

What’s speed measured in?

Answer 2

m/s

Question 3

What does the gradient on a distance-time graph represent?

Answer 3

Speed

Question 4

Define velocity and give an example

Answer 4

Speed in a direction

Eg. 10m/s north

Question 5

What’s acceleration?

Answer 5

Change in velocity of a body over a given amount of time

Question 6

How’d you work out acceleration?

Answer 6

Change in velocity/time taken

Question 7

What’s the gradient on a velocity-time graph?

Answer 7

Acceleration

Question 8

What’s stopping distance?

Answer 8

The minimum distance that a car can safely stop in

Question 9

How do you work out stopping distance?

Answer 9

Thinking distance + braking distance

Question 10

What’s the thinking distance?

Answer 10

The distance travelled by the vehicle in the time it takes for the driver to react

Question 11

What factors affect thinking distance?

Answer 11

Alcohol
Tiredness
Speed
Distractions like phones
Drugs and medicine

Question 12

What’s the braking distance?

Answer 12

The distance travelled by a vehicle during the time the braking force acts

Question 13

What factors affect braking distance?

Answer 13

Weather
Speed
Condition of the road
Condition of tyres/brakes