P1B: Motion

Question 1

What is the formula of average speed?

Answer 1

Average speed (m/s) = total distance travelled(m) / total time taken (s)

Question 2

What is the formula for acceleration?

Answer 2

acceleration = change in velocity (m/s) / time taken (s)

Question 3

What is the unit of acceleration?

Answer 3

m/s^2

Question 4

Can acceleration be written with a negative number?

Answer 4

Yes, when acceleration is written with a negative number, it is synonymous with deceleration

Question 5

How is constant speed shown on a distance-time graph? (distance = y-axis and time = x-axis)

Answer 5

A straight, sloping line

Question 6

How is faster constant speed shown on a distance-time graph? (distance = y-axis and time = x-axis)

Answer 6

A straight, sloping line of a higher gradient

Question 7

How is stationary (no movements) shown on a distance-time graph? (distance = y-axis and time = x-axis)

Answer 7

a flat/horizontal line

Question 8

How do you calculate the gradient of a line?

Answer 8

gradient = increase in y-axis / increase in x-axis

Question 9

In a distance-time graph, what is the gradient in the line?

Answer 9

gradient = change in distance / change in time

Question 10

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

Answer 10

The gradient shows the speed of the object