For this problem, assume that the acceleration of gravity is 10 m/s2 downward, and that all friction effects can be neglected. A ball is thrown upward at a velocity of 20 m/s. What is its velocity after 3 s?

A) zero
B) 10 m/s upward
C) 10 m/s downward
D) 20 m/s downward
E) 20 m/s upward


C

Physics & Space Science

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