SOLUTION: Please help me solve this .A car has uniformly accelerated from rest to a speed of 25m/s after traveling 75m.what is it's acceleration?
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Question 1181395: Please help me solve this .A car has uniformly accelerated from rest to a speed of 25m/s after traveling 75m.what is it's acceleration? Answer by ikleyn(52778) (Show Source):
You can put this solution on YOUR website! .
A car has uniformly accelerated from rest to a speed of 25m/s after traveling 75m.
what is it's acceleration?
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We have two basic kinematic equation for the given situation
S = (1) (S is the distance, "a" is the acceleration, t is the time)
and
V = at (2) (V is the speed).
Substitute the given values into equations:
75 = (1')
25 = at (2')
From (2') express t = . Substitute it into (1'). You will get
75 = = .
It gives a = = = = 4 m/s^2 = 4.166... m/s^2 = 4.166 m/s^2 (rounded).
ANSWER. The acceleration is 4 m/s^2 = 4.166... m/s^2 = 4.166 m/s^2 (rounded).