70-71 - Time Graphs

Question 1

What is the difference between velocity and speed?

Answer 1

Velocity must have a direction

Question 2

What unit is acceleration measured in?

Answer 2

m/s^2

metres per second per second

Question 3

What is the formula for acceleration?

Answer 3

(v-u) / t

change in velocity / time taken

Question 4

What does the gradient signify in a DT graph vs an VT graph?

Answer 4

DT gradient = speed

VT gradient = acceleration

Question 5

What does a flat section signify in a DT graph vs a VT graph?

Answer 5

D flat = stationary

V flat = steady

Question 6

What does steepness signify in a DT graph vs a VT graph?

Answer 6

DT steeper = faster

VT steeper = greater acceleration or deceleration

Question 7

What does going downhill signify in a DT graph vs a VT graph?

Answer 7

DT downhill = moving back to starting point

VT downhill = deceleration

Question 8

What does a curve signify in a DT graph vs an VT graph?

Answer 8

D curve = acceleration or deceleration

V curve = acceleration

Question 9

What is acceleration?

Answer 9

How fast the velocity changes

Question 10

How do you find the acceleration on a VT graph?

Answer 10

Find the gradient

Rise / run

Question 11

How do you find the speed on a DT graph?

Answer 11

The gradient

Rise / run

Question 12

How do you find the distance travelled in a Velocity-Time graph?

Answer 12

Area under the graph