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A ball is thrown upward from the ground with an initial velocity of 10 m/s. Assume all digits are significant.

a. How long before the ball reaches its maximum height?

t = (0m/s - 10m/s) / -9.80m/s2 t = 1.0s

b. What is the ball's maximum height?

x = 0m + .5(10m/s + 0m/s) x = 5.0 m

c. What is the velocity of the ball when it returns to the ground?

v = 0m/s + -9.80m/s2 * 1.0s v = -9.8 m/s

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# Homework Help: 1d kinematics, falling object

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