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

Sagot :

Answer:

12 m/s

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

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