Recent content by drjohn15

So I managed to find all of the quantities for the crates at constant speed. But now their throwing in some acceleration and I'm kind of lost as to how to approach this. I've attached some of the questions that have already been asked and also the questions that I'm having trouble with...

Awesome! Thanks a lot Jesse!

Here are some of the questions asked. ***EDIT, I guessed on the first three questions... ****

So far I have two different scenarios drawn. The first is where the lower crate is pushed by Mario, and the upper crate gets pushed by the lower crate (one in front of the other). My other drawings show the lower crate at the bottom of the ramp, and the upper crate to the east of the lower...

Mario's new additions to the company's standard ramp include two hard nylon rails which run the length of the ramp; the crates which have to be moved will slide along the hard nylon rails with almost no friction. In the space on the ramp which is in between the nylon rails, Mario has installed a...

Thank you for your response! I realized that the triangles that I had drawn were correct, I just didn't realize that I was using the wrong angle.

Jerome and Paul are competitive brothers. They live on a small farm on the northern bank of a river that runs purely east and west and that flows to the east at a rate of 1.25 m/s. The brothers have run some time trials on the farm pond, and they know that, in still water, Jerome can paddle the...

Awesome! Thanks a lot! BTW, how did you make that graph?

Homework Statement You are videotaping a birthday party in your dorm room; your dorm window in centered in the frame of your video camera. Suddenly, a rock passes by your dorm window! Assuming the rock was thrown horizontally, and assuming that the rock was traveling in a plane parallel to...

This is it! ##position\ @\ t = 2.1\ s \rightarrow -3.1\ m + \frac{2.1\ s * 2.1\ m/s}{2} = -0.895\ m## ##position\ @\ t = 8.4\ s \rightarrow -0.895\ m + 6.3\ s * 2.1\ s = 12.335\ m## ##...etc.## Thanks again!

From the lecture, the average speed is: $$average\ speed = \frac{d}{\Delta t}$$ where ##d## is distance traveled, and ##\Delta t## is the time elapsed. So how would I find the distance traveled? From the data that I've been given and the data that I've calculated previously, I'm a little lost...

Thanks very much for the replies! I've attached the given graph (didn't know how before).

Homework Statement You are consulting for an elevator company. During a safety test, technicians created the following graph of the velocity of the elevator versus time; you have been asked to interpret the graph. Unfortunately, you are told that the technician who printed the graph has made...