Question

Momentum of a body is p and its kinetic energy is E. Its momentum becomes p. Its K.E.will be

(a) E/2 (b) E (c) 2E (d) 4E ??​

Answer 1

$\huge\underline\purple{Solution!}$

★ Answer:-

〰️> $D) \: 4E$

★ Explanation:-

〰️> $As \: we \: know$

$k = ( \frac{p}{2m} )^{2}$

$or\: k \: \alpha \: p^{2}$

$Therefore, \:when \: P \: is \: doubled, \: kinetic \: energy \: will \: increase \\ by\: four \: times.$

Do refer the attachment provided above!

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I hope this helps! ^^

Answer 2

Answer:

2E ,

Explanation:

because its answer will be 4E when its momentum is double then its answer will be 4E