A body of mass m is projected with initial speed u at an angle theta with the horizontal what will be the change in momentum of body after time t??

Asked by  | 27th Aug, 2012, 09:23: PM

Expert Answer:

in the horizontal direction there will not be any change in velocity as there is no force acting....it will remain u cos ?
in vertical direction the final velocity after time t sec:
v=usin?-gt
so after t sec the horizontal comp of vel=u cos ?
so after t sec the vertical comp of vel=usin?-gt
so the final velocity=?(u 2cos ?+(usin?-gt)2)
solve and reduce and then find the final momentum.
and find the change in momentum.
 

Answered by  | 28th Aug, 2012, 10:30: AM

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