a 6.7kg object moves with a velocity of 8 m/s. whats its kinetic energy?(A)26.8J(B)214.4J(C)167.5J(D)53.6J
Physics · Middle School · Mon Jan 18 2021
Answered on
Given:
Mass = 6.7 kg
Velocity = 8 m/s
Determine the kinetic energy of the object.
Formula for kinetic energy:
Ke = ½ mv^2
Solution:
In order to determine the kinetic energy of the object, we simply needed to substitute the values of mass and velocity to the formula of kinetic energy.
Ke = ½mv^2
Ke = ½ (6.7kg)(8 m/s)^2
Ke = ½ (6.7 kg)(64 m^2/s^2)
Ke = ½ (428.8 kg. m^2/s^2)
Ke = 214.4 J
Final answer:
Ke = 214.4 J