Question 1007759
With what velocity will a stone strike the ground if dropped from the top of the building 400 ft high?Solve by integration.
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h(t) = -16t^2 + vo*t + ho is commonly used with feet units (vo = initial speed, ho = initial height)
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h(t) = -16t^2 + 400
h(t) = 0 at impact
-16t^2 + 400 = 0
t = 5 seconds (Ignore the -5)
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v = a*t = 32*5
v at impact = 160 ft/sec
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There's nothing to integrate.