- #1
SherBear
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Homework Statement
A car is moving at a speed of 20 m/s in 4 seconds and the car's tire is 38cm which is its diameter. How many revolutions did your tires make?
Homework Equations
Relevant Equations, T=2∏r / v
The Attempt at a Solution
My attempt at a solution:
To get the distance travelled=20 m/s (4 sec.) = 80 m
2∏(0.19m)= 1.19 m
80m / 1.19 m = 67.22 Rev
67.22 rev / 4 sec. = 16.805 rev/s ?
is this wrong?