D. Equal to zero.
Because the forces balance each other.
Шада и я тебя понимаю с чего начать с того ни другого человека дал в долг у меня в здоровье
You have to get points to asked a question and then you can help people to get points and it you want to have friends send them inventions but it you don't have no points you can't asked quenstions
Answer:
both kinetic energy and potential energy
