a ball is dropped from the top on an 80-m high building. what speed does the ball have in falling 3.5 s?

Answer 1

v = g t = 9.81 * 3.5 = 34.3 m/s
but what if it hit the ground?
d = (1/2) g t^2 = 60 meters
so it has not hit ground yet, whew

Answer 2

does this change the answer... the ball is dropped from the top of an 80-m-high building. does the ball reach the ground in 4.0 s?

I got no, it falls only 78 m in 4.0 s

What speed does the ball in the first question have in falling 3.5 s?

Answer 3

What speed does the ball in the first question have in falling 3.5 s?
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I told you in the first line, 34.3 m/s
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in 4 sec
d = .5 * 9.81 *16 = 78.5 meters
so no

Answer 4

So how do you do that exact problem but if it is 4.0seconds?

Answer 5

suggama d

Answer 6

A ball is dropped from the top of a 84-m-high building. What speed does the ball have in falling 3.4 s?