Question

What is the velocity of a 30-kg box with a kinetic energy of 6,000 J? 64 m/s

6.0 m/s
18 m/s
20 m/s
36 m/s

Answer 1

Answer: 20 m/s

Explanation: To solve this problem we have to consider the expression of the kinetic energy given by:

Ekinetic=(1/2)*(m*v^2)

then E=0.5*30Kg*(20 m/s)^2=15*400=6000J