A motor car mass 1200kg moving in straight line in 90km\h velocity slows down to 18km/h in 4s by unbalanced force. Calculate acceleration.,change in momentum n magnitude of external force
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change in momentum is impulse and impulse also equal to
I=F.t
velocity initial =u
velocity final =v
convert both velocity in m/s
then a=(v-u)/t
F= mass .a
I=F.t
velocity initial =u
velocity final =v
convert both velocity in m/s
then a=(v-u)/t
F= mass .a
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