Asked by Lholo
A brick falls off a scaffold at a height of 80meters above the ground.
Calculate the magnitude of its velocity when it hits the ground.
Calculate the magnitude of its velocity when it hits the ground.
Answers
Answered by
bobpursley
Air friction is significant. Ignoring that,
PE at top=KE at bottom
mgh=1/2 m v^2
v=sqrt(2*9.8*80)
PE at top=KE at bottom
mgh=1/2 m v^2
v=sqrt(2*9.8*80)
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