A ball is shot vertically upward from the surface of another planet. A plot of y

Question

A ball is shot vertically upward from the surface of another planet. A plot of y versus t for the ball is shown in the figure, where y is the height of the ball above its starting point and t = 0 at the instant the ball is shot. The figure's vertical scaling is set by ys = 27.0 m. What are the magnitudes of (a) the free-fall acceleration on the planet and (b) the initial velocity of the ball?

This answer has no units° (degrees)mkgsm/sm/s^2NJWN/mkg·m/s or N·sN/m^2 or Pakg/m^3gm/s^3times

Explanation / Answer

Given that

height y=27 m

the acceleration in free-fall case a=9.8 m/s^2

now we find the initial velocity of the ball

h=u^2/2g

27=u^2/2*9.8

initial speed u=16.3 m/s

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