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HELP with question, I can't come up with the answer.

by bradycat
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bradycat
#1
Sep16-10, 04:48 AM
P: 13
I have a problem and I can't solve it. Do I have enough info?

Two knights on horseback start from rest 88.0m apart and ride directly toward each other to do battle. Horse A accelleration has a magnitude of 0.300 m/s^2, while Horse B has a magnitude of 0.200 m/s^2.

Relative to Horse A's starting proint, where do the horses collide?

I am not sure what to do here.
Can you tell me what formula or formulas I need to use to figure this out. Just a work question and have no clue. Do I have enough info tho??


Please let me know ASAP, thanks for looking and helping if you do.
Joanne

This is what I came up with, but not sure, still can't get the answer. of 52.8m
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DrummingAtom
#2
Sep16-10, 08:09 AM
P: 661
This one appears to not have enough knowns to deal with, but look closer.

Your equations would be:

d = 1/2at^2+vot

v = vo + at

If the riders start at from 0, that gives you vo=0. Does that help?


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