3.1 Name the force acting on the ball while it is in free fall. (1)
The velocity-time graph below represents the motion of the ball from the instant it is
thrown upwards until it hits the ground.
3.2 Write down the acceleration of the ball at time t = 1,02 s. (2)
3.3 Consider the areas A1 and A2 shown in the graph above. Write down the
numerical value represented by the DIFFERENCE in areas A1 and A2. (1)
3.4 Calculate the:
3.4.1 Speed at which the ball is thrown upwards (3)
3.4.2 Height h (4)
After hitting the ground, the ball bounces vertically upwards and reaches a new
maximum height in 1,1 s.
3.5 Calculate the work done by the ground on the ball while the ball is in contact
with the ground. (6)
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