P9 - Motion

Question 1

formula speed

Answer 1

speed = distance / time
v = d / t
m/s

Question 2

formula acceleration

using time

Answer 2

acceleration = change in velocity / time
a = Δv / t
m/s²

Question 3

formula Δv

change in velocity

Answer 3

Δv = (v - u)

u = initial velocity, v = final velocity

Question 4

formula acceleration

without time

Answer 4

v² - u² = 2as

u = initial velocity, v = final velocity, s = displacement

Question 5

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

Answer 5

velocity

Question 6

What does the gradient on a velocity-time graph show?

Answer 6

acceleration

Question 7

How to calculate the distance travelled on a velocity-time graph

Answer 7

calculate the area under the line

Question 8

Typical speeds:
1. walking
2. running
3. cycling
4. car
5. train
6. plane

Answer 8

1. 1.5m/s
2. 3m/s
3. 6m/s
4. 25m/s
5. 30m/s
6. 250m/s