Pleasee someone help me!
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Pleasee someone help me!

[From: ] [author: ] [Date: 11-06-28] [Hit: ]
recognize that v = 0.y = 64 ft.......
A baseball is thrown into the air with an initial velocity of 64 ft/sec. How high will it travel and how long will it take to reach its maximum height?

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I guess it's thrown straight up. This is a constant acceleration problem with a = g = -32 ft./s/s and v0 = 64 ft./s.

It's easier to solve the first part if you solve the second part first. When it reaches its maximum height, recognize that v = 0.

v = v0 + at
0 = 64 + -32t
32t = 64
t = 2s

Now use

y = v0t + (1/2)at^2
y = 64 * 2 + (1/2) * -32 * 2^2
y = 128 + (1/2) * -32 * 4
y = 128 - 64
y = 64 ft.
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