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Grade: 11

                        

If ke increased by 3 percentage then momentum will increased by

3 years ago

Answers : (1)

Arun
24742 Points
							
I have solved by assuming the increase in KE by 300%
 
100% KE (normal) + 300% KE (increase) = 400% KE or 4xKE

KE = (1/2)*m*v^2

define initial and final states...

4x KE1 = KE2           4x (1/2)*m1*v1^2 = (1/2)*m2*v2^2

cancel out (1/2) factor
mass doesn't change, m1 = m2 = m..... cancel out m 

4v1^2 = v2^2           or       (2v1)^2 = v2^2

2*v1 = v2

momentum is P = mv

m*v1 + Pchange = m*v2 = m* (2v1)
Pchange = 2*m*v1 - m*v1 = m*v1

m* v1 is 100% of m*v1

momentum is increased by 100%
3 years ago
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