State the effect of force in each of the following a)A spring is stretched b)A hockey player hits a in coming ball c)A foot ball lying in the ground is kicked
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Explanation
A:} In this type the effect of the force is MUSCULAR as we compress a spring our back muscles have an exercise.
( u can try it and see)
B} In this type the effect of the forces are of two types one itself is a force and the other is a type of force :
1.MUSCULAR FORCE
2. PUSH , as we hit the ball we try to push it away from us.
C In this type the effects of force are of two types one is muscular force as we use our energy to kick it and one is push.( This matter is similar as the (b) bit.
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40
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when a spring is stretched we change its shape by applying muscular force
when a hockey player hits a ball he changes his state of motion
football kicked by us we change his state of rest
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