If a car travel a distance of 90m with a final velocitybof 30m/s from its rest. What is its acceleration?
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Initial velocity, u = 0
Final velocity, v = 90 kmph = 20 m/s
Time, t = 30 s
Acceleration = change in velocity/time
= > a = (v - u)/t
= > a = 2 m/s2
Let s be the distance travelled in time t.
s = ut + ½ at2
= > s = 0 + ½ X 2 X 102
= > s = 100 m
Average velocity = total distance/total time = 100/10 = 10 m/s
Final velocity, v = 90 kmph = 20 m/s
Time, t = 30 s
Acceleration = change in velocity/time
= > a = (v - u)/t
= > a = 2 m/s2
Let s be the distance travelled in time t.
s = ut + ½ at2
= > s = 0 + ½ X 2 X 102
= > s = 100 m
Average velocity = total distance/total time = 100/10 = 10 m/s
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