## Miss_Deva 3 years ago Every force has a(n) ____ force. reaction long-range opposite accelerating You throw a ball into the air. As the ball leaves your hand, the force(s) acting on it is/are ____. gravity your hand balanced gravity and your hand I think 1. is opposite and 2. is gravity but I just want to make sure.

1. cerezas

i woudl say reaction force for 1

2. Miss_Deva

Well in my text book it says that forces always have equal but opposite pairs.

3. Miss_Deva

So wouldn't it be that every force has an opposite force?

4. cerezas

ok true, but when I learned physics they called it a reaction force. if your book says opposite force, then go with that.

5. Miss_Deva

Ok, I just wanted to make sure though because this is my last exam . Also, do you agree that 2. is gravity?

6. cerezas

why are you saying not your hand?

7. Miss_Deva

Because it's saying "As the ball leaves your hand".

8. Miss_Deva

So wouldn't it be not counted as a force because it's not acting upon it?

9. Miss_Deva

The only force that would be acting on it would be gravity as it's going up in the air.

10. cerezas

yeah that's exactly right

11. Miss_Deva

Ok, thanks for the help. :)

12. purplec16

opposite

13. purplec16

Based on Newton's Law equal and opposite forces.

14. Miss_Deva

That's what I though also. I also decided to go with gravity and your hand for 2. and I got both of them right. :)

15. purplec16

As the ball "leaves" your hand... hmm, that's really trick and wow okay that's great!!!

16. Miss_Deva

Lol, thanks for answering though! :)

17. Miss_Deva

And yes, number 2 was tricky. :P