A football is kicked into the air vertic...

A football is kicked into the air vertically upwards. What is its (a) acceleration, and (b) velocity at the highest point ?

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(a) Consider the adjacent diagram in which a football is kicked into the air vertically upwards. Acceleration of the football will always be vertical downward and is equal to g.

(b) When the football reaches the highest point velocity will be zero as it is continuously retarded by acceleration due to gravity g.

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