Homework Help: General Physics I

Posted by Anonymous on Tuesday, October 12, 2010 at 1:37am.

An antelope moving with constant acceleration covers the distance between two points 70.0
m apart in 7.00 s. Its speed as it passes the second point is 15.0 m/s. (a) What is its speed at the first
point? (b) What is its acceleration?

General Physics I - drwls, Tuesday, October 12, 2010 at 6:40am
(a) Vav *t = [(V2 + V1)/2]*7 = 70
V2 = 15
V2/2 = 7.5 = 10 - (V1/2)

V1/2 = 2.5
V1 = 5 m/s
a = (V2 - V1)/t = 10/7.00 m/s^2

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