A boy makes a small snowball and then pushes it around in the snow to make it bigger. He pushes it at a constant speed as the snowball gets bigger. If the snowball doubles in mass, what will happen to the kinetic energy ( Motion energy) of the snowball?

It will decrease

Explanation:

As the snowball gets bigger, the kinetic energy of the body begins to reduce appreciably.

The condition given in this problem is constant speed.

At constant speed, the snowball is not accelerating and there is no external force acting appreciably on the ball.

   Now, we know that;

        K.E = m v²

m is the mass of the ball

v is the velocity of the ball

  In this scenario, the velocity of the ball is constant and not changing. But the mass of the ball begins to increase, eventually, the kinetic energy of the ball will reduce.

The increasing mass without an appreciable increase in velocity will bring the body to rest as a result of increase inertia of the body.

the answer is definitely c.