Homework Help: physics

Posted by lisa on Tuesday, February 2, 2010 at 5:38pm.

f a pronghorn antelope accelerates from rest in a straight line with a constant acceleration of 1.5 m/s2 , how long does it take for the antelope to reach a speed of 20 m/s?

physics - Priscilla, Tuesday, February 2, 2010 at 6:06pm
Given

Vi = 0 m/s {rest}
a = 1.5 m/s^2
Vf = 20 m/s

Vf = Vi + at
t = Vf/a

Vi cancels out

** Plug in and you should get the speed as 13.3 s

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