(1)a)how much work is needed to stop a 20g bullet moving with a speed of...

(1)a)how much work is needed to stop a 20g bullet moving with a speed of 150m/s
b)what is it meant by
I) displacement
Ii) horizontal component of a vector?



(2)a)what is the component of a vector in any given direction?
(b)At what height above the ground must a body of mass 10kg be situated in order to have potential energy equal in value to the kinetic energy possessed by another body of mass 10kg moving with a velocity of 10m/s?

3)A body is displaced through a certain distance X by a force of 30N.if the work done is 100j and the displacement is in the direction if force,what is the value of X?

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