If an object of mass 1000kg moving with an speed of 20m/s brought to rest and travelled 50m.Find the actual force applied by the brakes may be slightly leas than the calculated in and why
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v²-u²=2as
v=0
-u²=2as
-400=2×a×50
a=-4m/s².
F=m×a
F=1000×4
F=4000.
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