- #1
scotthands
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Homework Statement
A body falls from a height of 409.5m under gravity. Determine:
(a) The time taken to reach the ground, if the initial velocity is zero
(b) The velocity at impact with ground.
Homework Equations
s= ut
v= u+at
s=ut + 0.5*at^2
The Attempt at a Solution
i tried using the formulas above but couldn't get anywhere, i guess i need to use 9.8 for the acceleration due to gravity too?