Question

k.e of a moving body decreased by 200% the momentum of the body is decreased by​

Answer 1

Answer:

Momentum of body is decreased by 100%

Explanation:

We know that,

KE = mv² / 2

We also know that,

p = mv

v = p/m

Substituting v = p/m in the equation of KE we get,

KE = mp² / 2m²

KE = p² / 2m

By perentage analysis we get,

ΔKE / KE = 2 Δp / p

Given that,

ΔKE / KE = 200%

Putting this in we get,

2 Δp / p = 200%

Δp / p = 200/2

Δp / p = 100%