Question

What is the kinetic energy of a 1.5 kg object moving at a velocity of 100 m/s?

Answer 1

Answer:

KE = 7500 J

Step-by-step explanation:

Answer 2

Answer:

7500 joule

Step-by-step explanation:

100 m/s <<< c(= 3 x 10^8 m/s) or speed of light.

So, at this velocity, mass is constant.

Therefore,

KE = ½ mv²

KE = ½ x (1.5) x (100)² J

KE = 7500 J or 7.5 kJ