Question

What’s the kinetic energy of the object? Use . Erica is competing in the shot put event at a track meet. She hurls a shot with a mass of 4 kilograms at a speed of 9 meters/second. The shot’s kinetic energy is joules.

Answer 1

1. The Kinetic energy possessed by an object due to its motion or movement. Therefore, all moving objects have that kinetic energy.

    And also kinetic energy is directly proportional to the mass of the object    (m) and to the square velocity of the object (v²).

   Kinetic Energy ∝ mV²

Then we can write an equation for kinetic energy as below,

   $Kinetic Energy = (1/2)mV^{2}$

Kinetic energy is measured in units of Joules (J).

x

 2. mass of the object = m = 4 kg

     velocity of the object = V = 9 m/s

$Kinetic Energy = (1/2)mV^{2} \\ = (1/2) X 4 X 9^{2} =2X81 = 162 J$

$<strong>Kinetic Energy = 162 J</strong> (Joule)$

Answer 2

Answer:

162 because if you read it it tells you

Explanation: