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OpenStudy (anonymous):
A car of mass 800kg moving at 20ms^-1 is brought to rest by application of the brakes in a distance of 100m. Find the force exerted by the brake(friction) if there is no other resistance to motion.
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OpenStudy (anonymous):
@Algebraic! @Callisto @physicswork
OpenStudy (anonymous):
Vf^2 =Vi^2 -2ad 0 =Vi^2 -2ad Vi^2 = 2ad a= Vi^2/2d F=ma
OpenStudy (anonymous):
i got the answer thnkss :)
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