A physics free fall test center includes a 120 m drop tube. This is an evacuated...
A physics free fall test center includes a 120 m drop
tube. This is an evacuated tube which can be used to drop baseball
sized objects.
How long is the object in free fall?
ANS:4.95 s (in s)I just need the easiest way to
solve it
Homework Answers
v^2 - u^2 = 2gs
0 - u^2 = 2*9.8*120
u = 48.497
v = u - gt
0 = 48.497 - 9.8t
or t = 4.948 or 4.95 s
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