A girl throws a ball straight up in the air and lets it hit the ground. The heig

Question

A girl throws a ball straight up in the air and lets it hit the ground. The height of the ball (measured in meters) at time t (measured in seconds) is s(t) = ??4:9t2 + 14:2t + 1:5: The girl throws the ball at time t = 0. (a) Find the height of the ball at time t = 0 (this will yield the height of the girl). (b) At what time does the ball hit the ground? (c) Find s0(t), the velocity function for the ball (note that a positive velocity means the ball is travelling upwards, and a negative velocity means the ball is travelling downwards). (d) At what velocity does the girl throw the ball? (e) What is the velocity of the ball when it hits the ground? (f) At what time is the velocity of the ball equal to 0 m/s? What is the height of the ball at this time? (round your answers to two decimal places). (g) Find s00(t), the acceleration of the ball due to gravity.

Explanation / Answer

there is some confusion in s(t) can you please re post the question

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