- #1
darko21
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Homework Statement
A car starts from rest on a curve with a radius of 190 m and accelerates at 1.20 m/s^2 . How many revolutions will the car have gone through when the magnitude of its total acceleration is 3.10 m/s^2 ?
Homework Equations
A^2=At^2 + Ac^2
Ac=v^2/r
x=(1/2)at^2
Vf=at
The Attempt at a Solution
3.1^2=1.2^2+Ac^2
Ac=2.85
2.85=v^2/190
v=23.304
23.304=1.2t
t=19.42
x=(1/2)(1.2)(19.42)^2
x=226 (wrong)