contestada

Ka Lon pushed a 18 kg ball off of a bridge. The ball's velocity just before
it hit the water below was 23 meters per second. Find the ball's kinetic
energy.
4761 Joules
414 Joules
207 Joules
9522 Joules

Respuesta :

quasarJose

Answer:

4761J

Explanation:

Given parameters:

Mass of the ball  = 18kg

Velocity before it hits the water below = 23m/s

Unknown:

Kinetic energy of the ball  = ?

Solution:

Kinetic energy is the energy due to the motion of a body. It is mathematically expressed as:

  Kinetic energy  = [tex]\frac{1}{2}[/tex] m v²  

m is the mass

v is the velocity

 So;

  Kinetic energy  =  [tex]\frac{1}{2}[/tex]  x 18 x 23²  = 4761J

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