SOLUTION: A car have a velocity 72km in 10 second after starting from rest, find acceleration an the average velocity the distance traveled

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Question 314832: A car have a velocity 72km in 10 second after starting from rest, find acceleration an the average velocity the distance traveled
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I assume you mean the car is traveling at 72 kph.
Convert from kph to m/s.
72 km/hr*(1 hr/3600 sec)*(1000m/km)=20 m/sec
a=%28vf-vi%29%2Ft=%2820-0%29%2F10=2 m/sec^2
The average acceleration is 2 m/s^2.
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The average velocity is
Vave=%28Vf%2BVi%29%2F2=%2820%2B0%29%2F2=10 m/s
The average velocity is 10 m/s.
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The distance traveled, at constant acceleration, is,
d=%281%2F2%29at%5E2=%281%2F2%29%282%29%2810%29%5E2=100+m
The car traveled 100 m