If an object with a mass of #5 kg # changes speed from #4m/s# to # 7m/s#, by how much does its kinetic energy change?
2 Answers
Apr 30, 2016
Change in KE
Explanation:
Given
and mass
Formula for Kinetic Energy :
Change in KE
Change in KE
Change in KE
Change in KE
God bless....I hope the explanation is useful.
Apr 30, 2016
Explanation:
- Mass of the object
#m = 5kg# - Initial velocity
#v_i=4m/s# - Initial velocity
#v_f=7m/s# - The change in KE =
#1/2xxm(v_f^2-v_i^2)=1/2xx5xx(7^2-4^2)J#