(a)both assertion and reason are true and reason is the correct explanation of assertion (b)both assertion and reason are true and reason is not the correct explanation of assertion (c)assertion is true but reason is false (d)both asertion and reason are false (e)assertion is false but reason is true
assertion: a race car traveling around a circular track has a non-zero impulse reason: the impulse is only zero only when there is n net change in momentum
the answer is 'e'...bcoz momentum is a vector quantity.....while going round the circle the velocity changes at every instant bt not speed[in uniform] ..hence there is change in momentum
Explanation : in circular motion, the velocity vector keeps changing its direction, hence it keeps changing. If its non uniform circular motion, then v changes both in magnitude and direction. Hence, the result
Moderation Team
![[Post New]](/templates/default/images/icon_minipost_new.gif){kind=icon}
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
46
1
[/url]
