Recent content by helloword365

I talked to other ppl about this problem, and we've all gotten pretty wide-ranging answers, so I was wondering if someone could try and do this so I could see whether my answer is right/wrong. (Answer key does exist but its not that great for this problem). My work (if needed):

My work: Answer Key (red font one) *may not be right. My question is why is sidelength of cross section written as 8-8x/3, while my way of doing it doesn't involve that (involves suspicious similar triangle relationships)? Which answer (if any) is right here? 470 kj or 117 kj? Thank you!

thank you as well :). And to everyone too as well in this thread. (just reading through them, one by one.)

hi, thank you! This makes a lot of sense.

Hi, thanks for the counterexample, but how does this explain that different forces to different masses result in different accelerations?

I don't really get why applying different forces to objects of different masses would result in different accelerations. I read my textbook, and I understand the formula F(net) = m*a, and I think the reason may be because mass is inversely proportional to acceleration ? But this doesn't really...

Above is a graph of the distance vs. time for car moving along a road. According the graph, at which of the following times would the automobile have been accelerating positively? OK, so I was able to get that at t=5 and t=29, it's accelerating positively (I graphed the velocity vs time graph...

I'm excited to be here!