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zaphod
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.
@Algebraic! @Callisto @physicswork
Vf^2 =Vi^2 -2ad 0 =Vi^2 -2ad Vi^2 = 2ad a= Vi^2/2d F=ma
i got the answer thnkss :)