i-need-some-help-here-An-object-of-mass-m-falls-from-a-height-h-1-and-rebound-to-a-height-of-h-2-write-an-expression-for-its-momentum-

Question Number 64697 by Rio Michael last updated on 20/Jul/19

i n e e d s o m e h e l p h e r e .

A n o b j e c t o f m a s s m f a l l s f r o m a h e i g h t h_{1} a n d r e b o u n d

t o a h e i g h t o f h_{2} . w r i t e a n e x p r e s s i o n f o r i t s m o m e n t u m .

Answered by peter frank last updated on 20/Jul/19

i m p u l s e = c h a n g e o f m o m e n t u m

F = m . Δ v

v_{1}^{2} = 2 {g h}_{1}

v_{2}^{2} = 2 {g h}_{2}

Commented by Rio Michael last updated on 20/Jul/19

t h a n k s, F = m . △ v

v_{1} = \sqrt{2 {g h}_{1}} a n d v_{2} = \sqrt{2 {g h}_{2}}

a n d F = m (v_{2} - v_{1})

F = m (\sqrt{2 {g h}_{2}} - \sqrt{2 {g h}_{1}}) ? c o r r e c t ?

Commented by peter frank last updated on 20/Jul/19

y e s