Question

answers please......

Answer 1

$<b><I>$ ANSWERS:
a) decrease
b) kinetic energy
c) external force
d) total linear momentum


EXPLANATION:
a) a conservative force does positive work on a body when it displaces the body in the direction of force . As a result the body advances towards the centre of the force .it decreases the separation between the two thereby decreasing the potential energy of the body.

b) The work done against the direction of frequency reduces the velocity of a body .
Hence there is a loss of kinetic energy of the body .

c) Internal forces irrespective of their direction cannot produce any change in the total momentum of body has the total momentum of many particle system is proportional to the external force acting on the system .


d) The total linear momentum always remains conserved whether it is an elastic collision and inelastic collision .


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