SOLUTION: A car has uniformly accelerated from rest to a speed of 25 m/s after travelling 75 m. What is its acceleration ?
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Question 1180995: A car has uniformly accelerated from rest to a speed of 25 m/s after travelling 75 m. What is its acceleration ?
Found 2 solutions by Edwin McCravy, Solver92311:
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!
Answer:
Edwin
Answer by Solver92311(821) (Show Source): You can put this solution on YOUR website!
The distance traveled as a function of time is given by \ =\ \frac{1}{2}at^2\ +\ v_ot\ +\ s_o)
. Since, for this problem, the initial velocity is zero and the initial distance traveled is zero, this reduces to \ =\ \frac{1}{2}at^2)
. From the given information, we know this to be equal to 75 meters.
The velocity as a function of time is given by \ =\ at\ +\ v_o)
. Since the initial velocity is zero for this problem this reduces to \ =\ at)
. From the given information we know this to be equal to 25 meters per second.
Hence:
So
So the elapsed time at the point the distance was 75 meters and the velocity was 25 meters per second is 6 seconds. Since
\ =\ 6a\ =\ 25)
John
My calculator said it, I believe it, that settles it
From
I > Ø
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