lauraheredia0607
lauraheredia0607 lauraheredia0607
  • 03-04-2020
  • Physics
contestada

You throw 0.5-kg rock has a velocity of 20 m/s. What is it's kinetic energy?​

Respuesta :

olatunbosunadeoke
olatunbosunadeoke olatunbosunadeoke
  • 03-04-2020

Answer: 100 joules

Explanation:

Given that

Mass of rock = 0.5-kg

Velocity = 20 m/s

Kinetic energy = ?

Kinetic energy is the energy possessed by a moving object, and it depends on its mass and velocity.

Thus, K.E = 1/2 x Mass x (velocity)^2

K.E = 1/2 x 0.5kg x (20m/s)^2

K.E = 0.5 x 0.5 x 400

K.E = 100 J

Thus, the kinetic energy of the rock is 100 joules.

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