A ball is thrown vertically upwards at 15 m/s. It rises 11.25 m and then falls back down.
It is caught at the same height that it was thrown from, 3.0 s after it was thrown. Ignore air resistance.
State the displacement of the ball when it is caught.
Calculate the average speed of the ball.
Explain why the average velocity of the ball is zero, even though its average speed is not zero.
When the ball is caught, its velocity is 15 m/s downwards.
Calculate the change in velocity of the ball between being thrown and being caught.
43 exam-style questions on OCR GCSE Physics 2.1 Motion, covering 2.1.1 Measuring distance and time, 2.1.2 Measuring speed, 2.1.3 Ratios, units and rates in motion, 2.1.4 Scalars and vectors in motion, 2.1.5 Distance-time and velocity-time graphs, 2.1.6 Area under a velocity-time graph, 2.1.7 Average speed for non-uniform motion, and 2.1.8 Uniform motion and uniform acceleration. Each one has a worked solution and a mark scheme showing where the marks go.