Impossible physics question

sk8erboi

sk8erboi

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I'm convinced my teacher made some sort of mistake because i've been looking through my notes and researching online and I have no clue how to find friction, net force or acceleration

How am i supposed to find friction without the coefficient? How do i find the coefficient without acceleration? How do i find acceleration without net force? This is driving me nuts

I would really appreciate if someone pointed me in the right direction. I already found the normal force and horizontal applied force

Sorry if this is the wrong place to post this thread
 
yes, a coefficient of friction is needed to determine the friction force, net force and acceleration.
 
skeeter said:
yes, a coefficient of friction is needed to determine the friction force, net force and acceleration.
Click to expand...
what do i do then, do i tell my teacher she made a mistake?

I can't think of any way to find a coefficient, since (I'm assuming) the velocity isn't constant and there is acceleration
 
believe it or not, teachers DO make mistakes ... is there a problem with pointing out the omission of necessary information? i.e. will he/she bite your head off?
 
sk8erboi said:
what do i do then, do i tell my teacher she made a mistake?

I can't think of any way to find a coefficient, since (I'm assuming) the velocity isn't constant and there is acceleration
Click to expand...
Assuming you have shown us the entire question (I would have expected at least some description of the situation), it appears to be a mistake.

I would ask, not tell: "What am I missing? I don't see enough information here."

It is conceivable that you have missed something; by asking, you give your teacher a chance to realize the omission and apologize, or possibly to point out something you did miss.
 
Surely you understand that the same object, moving over different surfaces, rough, smooth, smooth oiled, will have different frictions. You can't "calculate" the friction without knowing those properties.
 
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