|
Masterman
Guest
|
 |
« on: 21 April, 2008, 10:10:08 pm » |
|
I didn't pay attention at all today.....
Find the acceleration of an object whose speed changes from 0m/s to 30m/s in 1.5 seconds.
If the car moves at a steady rate for 1.5 more seconds, what is it's momentum?
...........I crashed hard today.
|
|
|
|
|
|
|
|
Fooby
Guest
|
|
« Reply #1 on: 21 April, 2008, 10:21:30 pm » |
|
Wasn't momentum (I can't remember the symbol... p, or something) p=mv?
I think? ._.
|
|
|
|
|
|
|
|
Fooby
Guest
|
|
« Reply #2 on: 21 April, 2008, 10:23:26 pm » |
|
v(final) = v(initial) + at
a = (vf-vi)/t
I don't know about the second one, I may have messed up my variables.
Stick with the top one, isolate a on paper.
|
|
|
|
|
|
Masterman
Guest
|
|
« Reply #3 on: 21 April, 2008, 10:27:05 pm » |
|
Got the first one.
Thing is though, the 2nd question says nothing about velocity or mass.
I'm starting to think she either made a mistake making the 2nd part, or just trying to **** us off.
|
|
|
|
|
|
|
|
