Kinetic energy of an object depends on its mass and its speed.
If the masses are equal, then the rick with <em>more speed</em> has more kinetic energy.
Scientists ask questions so that they can be answered. As well as solving the world and its mysteries
The correct answer is d) 200 lbs.
Hope that I was of help.
Answer:
The answer is the kinetic energy of sled B after it crash is 6439j.
