Give scientific reasons : 1) A cricketer pulls his hand backward while catching a ball 2) A person alighting suddenly from a moving bus falls down 3) One cannot walk or run with skates in feet.
GSEB - Class 9 Chapter - 2.Force and laws of Motion Page 29
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1)A Cricketer moves his hands backwards during catching so as to take a longer time to stop the ball,this reduces the chances of injury.
According to Newton’s law of motion,
Force=Mass*(change in velocity\speed)/time
Greater the time used to stop the ball,lesser the impact of ball on hands and thus less chances of being hurt by ball and get injured.
2)It's because “Inertia of rest"
According to Newton’s law of motion,
Force=Mass*(change in velocity\speed)/time
Greater the time used to stop the ball,lesser the impact of ball on hands and thus less chances of being hurt by ball and get injured.
2)It's because “Inertia of rest"
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