Answer to Question #143680 in Physics for Sydney

Question #143680
A 30.1 kg cart is rolling across a level surface at 12.5 m/s. Brakes are applied slowing the cart down to 10.0 m/s. Calculate work.
1
Expert's answer
2020-11-17T12:58:23-0500
"W=K_f-K_i\\\\W=0.5mv_f^2-0.5mv^2_i\\\\W=0.5(30.1)(12.5^2-10^2)=847\\ J"


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