Question

What happens to kinetic energy when velocity is tripled?

Answer 1

kE = 1/2mv²

if v' =3v

then ,

KE ' = 1/2 m (3v)²

KE ' = 9 KE

its became 9times

Answer 2

══════════════════════════

$\it\huge\mathfrak\red{Hello}$]

══════════════════════════

KE = mv²/2.

So, KE1 = mv²/2

And KE2 = m (3v)²/2

KE2 = 9 (mv²/2) = 9 KE1

══════════════════════════

$\it\huge\mathfrak\red{Thanks}$]

══════════════════════════