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April 20, 2014

Homework Help: PHYSICS I NEED MAJOR HELP PLEEEAAAAAASSSSSSSSSEEEE

Posted by anonymous on Wednesday, December 13, 2006 at 11:46pm.

If velocity is positive and increasing then...
displacement is....
acceleration is....

If displacement is positive and increasing then......
acceleration is......
velocity is.....

If acceleration is positive and increasing then.........
displacement is.......
velocity is..........

If velocity is negative and increasing then.......
displacement is........
acceleration is.........

If displacement is negative and increasing then........
acceleration is.........
velocity is.........

If acceleration is negative and increasing then........
displacement is.........
velocity is........

If velocity is negative and decreasing then.......
displacement is.......

If displacement is negative and decreasing
acceleration is.......

If acceleration is negative and decreasing..........
displacement is...........

And what do you need? Most of these cannot be answered. They are examples of major constructs which are misleading.

Take the last for instance. Displacement depends on initial velocity and acceleration. If the initial veloicty were high, but acceleration was low negative, then likely displacement would be positive. If intial velocity was zero, or negative, with negative acceleration, then displacement would be negative.
Most of these are in this category. I hope this is not an example of the teaching or tests you regularily get.

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