Question

The kinetic energy of a body becomes four times its initial value. The new linear momentum will be

• A. twice the initial value
• B. same as the initial value
• C. four times the initial value
• D. thrice the initial vlaue

Answer 1

Answer: (A)

twice the initial value

Answer 2

$\frac{E'}{E} = \frac{p'^2}{p^2} = \frac{4}{1}$ i.e. p' = 2p