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Dynamics : Air Resistance and Forces on a Falling Pebble

A person stands on the edge of a cliff and throws a pebble of mass 0.02kg vertically upwards with speed 10m/s. At the instant it is released, the pebble is 50m above sea level. On its return, the thrower does not catch the pebble, which continues past and falls into the sea... (i) Modelling the pebble at a particle and ignoring frictional forces... (Please see attachment for full question)

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Forces on a falling pebble are investigated.

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