Question: A particle is thrown vertically upwards into the air. Its height s (in m) above the ground after time t (in seconds) is given by

A particle is thrown vertically upwards into the air. Its height s (in m) above the ground after time t (in seconds) is given by s = 25t – 5t2

(a) What height does the particle reach?

(b) What is its velocity when it returns to hit the ground?

(c) What is its acceleration?

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