Can someone help me with potential and Kinetic Energy? I'll give a medal!

Question

abhisar · Answer

Question?

anonymous · Answer

Yea one sec

anonymous · Answer

What force slowed down the ball as it moved up towards a peak?
What other force was acting on the ball as it moved along the track?
How can these forces be reduced?

anonymous · Answer

It's talkin about a roller coaster

anonymous · Answer

@Abhisar

abhisar · Answer

Ok, so let's do it one by one.

For the first question, what do you think it should be?

anonymous · Answer

I have no clue... I'm stupid lol wouldn't it be Potential energy...?

abhisar · Answer

They are actually asking you about force. Which force slowed it down while it was moving up.

anonymous · Answer

I have no idea then .-.

abhisar · Answer

What force brings you down when you jump up?

anonymous · Answer

Isn't it gravity? I told you, I'm stupid lol

abhisar · Answer

Yes, that's $\huge \checkmark$. Turns out you are not stupid (-:

anonymous · Answer

Oh, ok yay xD but that brings down, so what goes up? :/

matt101 · Answer

There is no upward force. Gravity is the only force in this case, and the acceleration is always in the same direction as the net force. So although your initial VELOCITY is upwards, you slow down, stop, and then start traveling in the other direction, all because the direction of the ACCELERATION is the same as the direction of the net force - down.

anonymous · Answer

Ah ok... Thank you