Recent content by iceninja3

Wouldn't conservation of momentum not work because gravity (on the block) is an external force? Unless of course, the impulse from gravity was accounted for(?)

Any approach (forces, energy, etc.) is valid.

How would I actually figure out the force exerted on the inclined plane?

My attempt: As I need to find acceleration I believe that I need to use F=ma(and thus draw a free body diagram). I drew the block's weight components(mgsinθ, mgcosθ) and concluded that the only force acting on the plane in the horizontal direction is the horizontal component of...

Ohhh I see. So if I do the chain rule I would get: a = mv and then substituting x back: a = m(mx+b) a = m^2x + mb m^2x + mb rules out B and D because x is linear. And rules out C because the y-intercept is nonzero. And rules out A because the slope is nonzero. Thank you so much!

The answer is E. I was initially very confused as to why the answer was not A but realized that the graph was velocity vs position (rather than velocity vs time) which means I can't simply take the derivative of the given graph. One thing I tried was writing out the equation first(c being a...

I'm a beginning student who found Physics Forums through generic google searches. The answers here were always very clear and with me getting more and more questions that I get stuck on I thought it'd be a good idea to be able to ask my own questions (and of course, answer the ones I can). See...