+0  
 
0
54
1
avatar+38 

A certain object traveling at 24 meters per second has a kinetic energy of 72 joules. If the kinetic energy of that object varies directly as the square of its velocity, find the kinetic energy of that object travelling at 27 m/s.

 Feb 22, 2021
 #1
avatar+30677 
+1

e = k v^2       k = proportionality 'k'onstant

 

72 = k (24^2)

k =  72 / (24^2) = 0.125

 

e = .125 v^2

e = .125 * 272 = 91.125 j

 Feb 22, 2021

15 Online Users

avatar