A ball is placed at rest at the top of a hill. It travels with constant acceleration for the first 15 second and reaches a speed of 5m/s. It then decelerates at a constant rate of 0.1m/s2 for 20 seconds. It then travels at a constant speed for a further 20 seconds. Draw a speed-time graph for the ball over the course of this 50 seconds.
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A ball is placed at rest at the top of a hill. It travels with constant acceleration for the first 15 second and reaches a speed of 5m/s. It then decelerates at a constant rate of 0.1m/s2 for 20 seconds. It then travels at a constant speed for a further 20 seconds. Draw a speed-time graph for the ball over the course of this 50 seconds.
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