I need some help on a couple of physics problems. I appreciate the help!?
– positive
– negative
– zero
– can not determine
2) You are in a game of toss the water balloon. When you catch the balloon that is thrown to you, the work you do is
– positive
– negative
– zero
– not enough information
3) You are holding your cell phone to your ear. You are doing
– positive work on the phone.
– negative work on the phone.
– zero work on the phone
– not enough information
4) You are throwing a ball against a wall so that it bounces off the wall with the same speed that it hits the wall with, the work done by the wall on the ball is
– positive
– negative
– zero
– not enough information
5) You are parachuting out of an airplane. Once your parachute opens, as you fall the work done by gravity on you is
– positive
– negative
– zero
– not enough information
Favorite Answer
2) negative
3) zero
4) positive
5) positive
of course you can have negative work. the signs (+, 0, -) signify the relational directions of the two units involved in work: force and displacement.
you can’t have negative work done or no work is done at all
