A train with mass 3.3 x 107 kg starts from rest and accelerates to a speed of 42 m/s. What is the initial kinetic energy of the train?

The initial kinetic energy of the train is .

Explanation:

Given: Mass =

Speed = 42 m/s

Kinetic energy is the energy acquired by an object due to its motion.

Formula to calculate kinetic energy is as follows.

where,

m = mass of object

v = speed of object

Substitute the values into above formula as follows.

Thus, we can conclude that the initial kinetic energy of the train is .

answer; (arch); good luck

the answer is b i think