distance=1/2 a t^2
a= 2 distance/t^2
so if the new t is 1/4, the new a must be 16 times
Two objects moving with constant acceleration starting from rest are to cover the same distance. If the second is to cover that distance in ¼ of the time would need
a: a quarter of the first’s acceleration.
b: a half of the first’s acceleration.
c: sixteen times the first’s acceleration.
d: eight times the first’s acceleration.
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