A car of mass 05 quintal moving with a speed of 54 km/hr is
stopped by applying break in 10 seconds then find force applied
by brakes.
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Answer:
mass = 0.5 quintal or 50kg
initial velocity = 54km/hr or 15m/s
final velocity = 0m/s
time = 10s
acceleration = v-u/t
= -15/10
= -1.5 or 1.5m/s² ((-) can be removed as we r talking about deceleration )
force exerted during initial deceleration to final deceleration = ma
= 50 × 1.5
= 75N
hope it helped :)
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