Acceleration and velocity time graphs #2

Question 1

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

Answer 1

ACCELERATION

Question 2

What do the flat sections on a velocity-time graph represent?

Answer 2

A constant / steady speed.

Question 3

State the relationship between the graph and the acceleration/ deceleration. ( in a v-t graph? )

Answer 3

The STEEPER the graph, the GREATER the ACCELERATION or the DECELERATION

Question 4

What do uphill sections (/) represent in a v-t graph?

Answer 4

The acceleration of the object.

Question 5

What do downhill sections () represent in a v-t graph??

Answer 5

The deceleration of the object.

Question 6

What does the area under any section, or all, of a v-t graph tell you?

Answer 6

The DISTANCE TRAVELLED by the object in that TIME INTERVAL.

Question 7

What does a curve mean in a v-t graph?

Answer 7

Changing acceleration.

Question 8

Where can you find the value of the velocity on a velocity- time graph?

Answer 8

On the vertical (y) axis

Question 9

Where can you find the value of the time on a velocity- time graph?

Answer 9

On the horizontal (x) axis

Question 10

What is the distance travelled in section A of this graph?

Answer 10

By counting the squares in the section, you can find that the distance travelled = 20 X 40 / 2 = 20 m

Question 11

What is the approximate acceleration in section C of this graph?

Answer 11

Acceleration = gradient = vertical (y) change / horizontal (x) change = 20 / 10 = 2 m/s squared

(don’t forget the squared!)