Asked by Anonymous
A ball is thrown vertically upward, which is the positive direction, a little later it returns to its point of release, the ball is in the air for a total time of 2.1sec,what was its initial velocity
Answers
Answered by
oobleck
the ball stops rising when the time is half gone.
v-9.81t = 0
v = 9.81 * 2.1/2 = 10.3 m/s
v-9.81t = 0
v = 9.81 * 2.1/2 = 10.3 m/s
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