ifv=(3i+4j+5k)m/s is the instantaneous velocity of a body mass 1.50kg calculate its K.E

Answer 1

I wish I knew your academic level. I will go with the basic.

velocityScalar=sqrt(3^2+4^2+5^2)
then KE= 1/2 mass*velocityScalar^2

Answer 2

I only want answer for this question I dintknow