Question

At t0 = 0 s a ball is thrown horizontally from the roof of a building...

At t0 = 0 s a ball is thrown horizontally from the roof of a building 9.0 m tall. It lands 9.5 m from the base of the building.

a. What was the initial speed of the ball? v0 =

b. What was the impact speed of the ball? v1 =

c. At what time did the ball strike the ground? t1 =

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Answer #1

Here the ball is thrown horizontally. So we have only horizontal component of initial velocity and vertical component of initial velocity is zero.

Finding the time from vertical motion we can find the initial velocity by the relation , v = d/t.

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