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PLEASE HELP A second group of students carry out the investigation. They also

measure the velocity of the ball at point C.
A graph of their results is shown in Figure 2.
Calculate the acceleration of the ball between points B and C on
the graph. Give the unit of acceleration. (4 marks)

PLEASE HELP A second group of students carry out the investigation. They also measure-example-1

1 Answer

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Answer:-0.03m/s^2

Step-by-step explanation:

The unit of acceleration is m/s^2 (meters over second squared). Therefore it is the same as the velocity over the time, as m/s (formula for velocity) divided by s (time) is m/s^2

Therefore to answer the question all we need to do is find the velocity and time of B and C and divide them.

To find the velocity of points B and C we need to do final velocity - initial velocity which is 0.8 - 1 which is -0.2 (it is negative as the object is decreasing in velocity meaning it is decelerating.)

To find the time taken we need to do 15 - 8 which is 7 seconds. Therefore it takes 7 seconds for the ball to travel from velocity B to velocity C.

Now since the formula is Change in Velocity over time, we do -0.2 divided by 7 to get -0.02857142857 which can probably be rounded to -0.03.

Since the unit is m/s^2 the final answer is

-0.03m/s^2

I hope this is helpful please correct me if i am wrong.

User Colby Africa
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