B . it should be convert energy.
You can only determine the speed since the only info we know is how much you ran in how long of a time.
Answer:
the correct answer is option C
Answer:
A) Energy is dissipated into heat and sound energy due to Friction
B) The energy goes into heat and sound energy due to friction again, otherwise the cart would accelerate due to an unbalanced force. Therefore, we know there's friction, and the friction causes energy loss.