Chapter 9: Motion graphs

Question 1

What equation links speed, distance and time?

Answer 1

speed = distance/time

Question 2

How do you work out the average speed?

Answer 2

average speed = total distance/total time

Question 3

What equation links acceleration, velocity and time?

Answer 3

acceleration = change in velocity/time

Question 4

What is the gradient of a VT graph?

Answer 4

acceleration

Question 5

What is the area under a VT graph?

Answer 5

distance travelled

Question 6

What is velocity measured in?

Answer 6

ms^-1

Question 7

What is acceleration measured in?

Answer 7

ms^-2

Question 8

How do you find the instantaneous speed?

Answer 8

speed = length of vehicle/time

Question 9

How do you find the velocity using ticker tape?

Answer 9

Use the equation velocity = length/time. The time will be 0.02s because the frequency is 50Hz.

Question 10

How do you find the acceleration using ticker tape?

Answer 10

acceleration = v-u/t

The time will be 0.02, multiplied by the number of gaps. ‘u’ pertains to the initial velocity.