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plz solve my question...it is in the attached image..plz explain a genuine reason for the answer..thank u

plz solve my question...it is in the attached image..plz explain a genuine reason for the answer..thank u

Question Image
Grade:12

2 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago

576-629_Screenshot_2019-08-09-06-18-58-360_com.android.chrome.png
Vikas TU
14149 Points
4 years ago
Dear studentย 
ย 
v^2 โ€“ u^2 = 2as
s here is distance travelled ,ย 
so, s= d
ย 
Forceย  = m* a
a = F/mย 
Now , u = 0ย 
So, v^2 = 2ad
Put a = F/mย 
v = sqrt( 2dF/m)
so , v is inversly proportional to sqrt m .ย 
ย 

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