Question

When a boy doubles his speed, his kinetic energy becomes (half/four times/

double/no change)​

Answer 1

Answer:

When a boy doubles his speed, his kinetic energy becomes four times.

Answer 2

Answer:

kinetic energy = 1/2 mv²

kinetic energy is proportional to v²

$\huge{ \mathtt{ \colorbox{black}{ \color{gold}{four \: times}}}}$