29
Jul
Physics help plz?!? extra points for right and fast answer!!? Best answer on the web
Author: webmaster // Category: xn--g7qx97f.comAn object dropped from the roof of your house is in free-fall.
Hang time for a jump depends only on your vertical launch speed.
Freely falling objects are affected only by gravity.
Freely falling objects fall about 5 meters in one second from a position of rest.
The distance vs time graph for a freely falling object is a curved line.
Acceleration is a change in velocity.
1. True.
2. "Hang time?" I know that the horizontal and vertical components are independent of one another. Most likely to be false.
3. True.
4. False, I think.
5. False, I believe.
6. Yes.
A: True.
Q: Hang time for a jump depends only on your vertical launch speed.
A: False. It also depends on wind speed, gravity, horizontal launch speed, etc. (If you are in a CP high school course you may not be expected to know this. Answer true in that case.)
Q: Freely falling objects are affected only by gravity.
A: False. Free falling objects are also affected by wind resistance. (Again, if you are in a CP high school course you probably won't be expected to know this, so answer true)
Q: Freely falling objects fall about 5 meters in one second from a position of rest.
A: True. (The force of gravity is 9.81 m/s^2. So, in a second they would fall about half that distance.)
Q: The distance vs time graph for a freely falling object is a curved line.
True.
Q: Acceleration is a change in velocity.
A: True. (Note to Dr. T: Deceleration is a form of acceleration. It's just negative.)
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