A tennis ball machine fires a ball vertically upwards at time t=0 at 19.6 m/s. Assume that air resistance is negligible and take g=9.8 m/s^2. Calculate the displacement and velocity of ball at t=1 s.

Answer 1

v = Vi - 9.8 t
h = Hi + Vi t - 4.9 t^2
here: Vi = 19.6, Hi = 0, t = 1
so
v = 19.6 - 9.8*1
h = 0 + 19.6 - 4.9 * 1^2

Answer 2

For displacement 14.695m

Answer 3

Excellent

Answer 4

Freind and research

Answer 5

How to be?

Answer 6

23

Answer 7

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