Respuesta :

Answer: v = 20 m/s

Explanation: Solution:

Use the formula of Kinetic Energy and derive for v:

KE = 1/2 mv²

To find v:

v = √ 2 KE / m

  = √ 2 ( 100000 J ) / 500 kg

  = √ 400 m/s

  = 20 m/s