A ball is dropped from the top of a building which takes 10 s to reach the ground. What is the height of the building?

A ball is dropped from the top of a building which takes 10 s to reach

1.	A ball is dropped from the top of a building which takes 10 s to reach the ground. What is the height of the building?
A.	420 m
B.	400 m
C.	78.4 m
D.	490 m
Answer» E.

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A ball is dropped from the top of a building which takes 10 s to reach the ground. What is the height of the building?

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