Momentum change = (braking force)*(time)
Force = M V /t
= 1000 * 10/5 = 2000 N
A 1000-kg car moving at 10 m/s brakes to a stop in 5 s. The average braking force is?
when i work this out with the formula that you gave me, i get 2525 instead of 2000 N
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