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a ball is dropped from a 100-m tall building. Neglecting air resistance, what will the speed of the ball be when it reaches the ground 4.5 seconds later?
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a ball is dropped from a 100-m tall building. Neglecting air resistance, what will the speed of the ball be when it reaches the ground 4.5 seconds later?

User Abhishek
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1 Answer

4 votes
Hello.

h=150 m

u(initial speed)=0

t=5.5 s
v(final speed) =?

2gh=v^2-u^2

Have a nice day
User Ayoub Laazazi
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