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two balls are dropped from the roof of a 100 meter tower at the same time:...

two balls are dropped from the roof of a 100 meter tower at the same time:

a. what is the difference in time for balls to hit ground

b. which ball will take longest to hit ground

c. what height will ball a reach ball b if ball b is dropped 1 second before a

air effects are void. balls are same size. a weighs 20 newtons. b weighs 10 newtons.

Science   Advanced-Physics   
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