A ball with mass 130 g is projected upward from the ground with an initial speed of 14 m/s, travelling vertically upwards. It slows down until, for an instant, it comes to rest at a height h above the ground.
(a)[2]
Define deceleration.
(b)[1]
Show that the time taken for the ball to reach height h is 1.4 s. Ignore the effect of air resistance.
(c)[3]
Calculate h. Ignore the effect of air resistance.
(d)[3]
Describe and explain the motion of the ball as it falls. Consider the effect of air resistance in your answer.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Decrease in velocity per unit time OR rate of decrease in velocity OR negative rate of change of velocity OR -Δv/Δt” …