physics..
posted by Abby
This seems easy and yet i'm skeptical if these are actually supposed to be difficult.. It asks for a lot. It's seems repetitive..
1. a falling stone takes .30 seconds to travel past a window 2.2m tall. From what height above the top of the window did the stone fall?
2.
(a) Is the object moving in the positive or negative direction?
not moving
negative
positive
(b) Is the object speeding up or slowing down?
neither
speeding up
slowing down
(c) Is the acceleration of the object positive or negative?
no acceleration
positive
negative
***Next, for the time interval from D to E:
(d) Is the object moving in the positive or negative direction?
negative
positive
not moving
(e) Is the object speeding up or slowing down?
speeding up
slowing down
neither
(f) Is the acceleration of the object positive or negative?
negative
no acceleration
positive
Finally, answer these same three questions for the time interval from C to D.
***Is the object moving in the positive or negative direction?
not moving
negative
positive
***Is the object speeding up or slowing down?
speeding up
slowing down
neither
***Is the acceleration of the object positive or negative?
no acceleration
positive
negative
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