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Grade: 11
        a 100kg bear slipped from a 10metre height &died the maximum impulse on bear was 1400newton/second then what is the colour of bear
10 years ago

Answers : (2)

harsh sharma
8 Points
							
						
10 years ago
Pratham Ashish
17 Points
							

hi,

velocity of bear just before it reaches ground = √2g h = √20g

momentum  of  bear at this time = mv = 100√20g

impulse = Δ P

max. impulse will be when  P later will be zero

so ,  100√20g  -0 = 1400

        √20g  = 14

     20g = 196

     g =  9.8  m/sec^2

so, bear is not the polar one(otherwise we will get g= 10 ) , its the usual black one

10 years ago
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