Question

Which one of the following choices represents the largest kinetic energy?

a) Mars is moving in its orbit around the Sun.
b) A cyclist is racing in the annual Tour de France bicycle race. c) A leaf falls from a tree.
d) A cheetah runs at its maximum speed to catch a fleeing zebra. e) An oil tanker sails through the Panama Canal.

Please explain the answer, the correct answer is A  

Answer 1

largest kinetic energy is of Mars is moving in its orbit around the Sun.

Because Kinetic energy is directly proportional to the mass of the object and square of the velocity of the object.

Since, KE = (1/2) mv²

And among the given options mars has the highest mass.