A motor car is moving with a velocity of 90km/ h and it takes 4s to stop afer the brakes are applied .the force ecerted by the brakes on the motorcar if the mass alongwith the passenager is 100kg
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Final v = 0m/s
Initial u =90km/h
=25m/s
Time= 4s
Acceleration = v-u/t
=0-25/4
=-25/4
=-6.25
Mass= 100kg
Force exerted= m×a
=100 × - 6.25
=-625N
Initial u =90km/h
=25m/s
Time= 4s
Acceleration = v-u/t
=0-25/4
=-25/4
=-6.25
Mass= 100kg
Force exerted= m×a
=100 × - 6.25
=-625N
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