Calculate the kinetic energy of an object of mass 30 Kg whose velocity increases which attain 54 Km per hour staring from rest?

Answers (1)

velocity 

v=54Km/h=54\times\frac{5}{18}m/s=15m/s

Kinetic energy

K=\frac{1}{2}mv^2=\frac{1}{2}\times30\times15^2=15^3=3375J

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