Question

What must have been the velocity of a 250 kg car that has 18000 J of energy?

Answer 1

12 m/s

Step-by-step explanation:

Given,

Kinetic energy ( K.E ) = 18000 J

Mass ( m ) = 250 kg

To find : Velocity ( v )

Formula : -

K.E = mv²/2

v² = 2 K.E / m

= 2 x 18000 / 250

= 2 x 72

= 144

= 12 x 12

v² = 12²

v = 12 m/s

Therefore,

the velocity of the car is 12 m/s