Question

Two bodies of mass 1kg and 4kg possess equal momentum .The ratio of KE is

A) 4 : 1 B) 1 : 4 C) 2 : 1 D) 1 : 2​

Answer 1

Answer:

B) 1:4

Explanation:

KE=1/2mv²

p=mv

v=p/m

For 1st body For 2nd body

m1=1kg m2=4kg

v1=p v2=p/4

Ratio of KE = KE1/KE2

(1/2*1*p²)/(1/2*4*p²/16)

1/4

Ratio=1:4

Answer 2

Answer:

b)1:4

Explanation:

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