Explain the examples for second laws of motion:1) the case of cricketer playing cricket2)the case of a high jump3)use of seat belts in car
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1) The cricket player draws his hands back on catching the ball because this action helps to reduce the fast moving ball's momentum more gently, exerts less force on the hand, and prevents injury to hands.
2) The heap of Sands are placed so that the sand (being soft and fluid like) reduces the large momentum of a falling high jumping athlete more gently. Due to this, less opposing force acts on the athlete's body and injuries r prevented.
3) The slightly stretchable seat belts worn by the passengers of the car increase the time taken by the passengers to fall forward. Due to longer time, the rate of change of momentum of passengers is reduced and hence less stopping force acts on them. So, the passengers may either not get injured at all or may get less injuries. It is obvious that seat belts reduce the passenger's momentum more gently and hence prevent injuries.
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2) The heap of Sands are placed so that the sand (being soft and fluid like) reduces the large momentum of a falling high jumping athlete more gently. Due to this, less opposing force acts on the athlete's body and injuries r prevented.
3) The slightly stretchable seat belts worn by the passengers of the car increase the time taken by the passengers to fall forward. Due to longer time, the rate of change of momentum of passengers is reduced and hence less stopping force acts on them. So, the passengers may either not get injured at all or may get less injuries. It is obvious that seat belts reduce the passenger's momentum more gently and hence prevent injuries.
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