Practice projectile motion with fully solved physics problem examples. This video walks through step-by-step solutions to help you understand equations, motion components, and problem-solving ...

Weird effect: Have you ever noticed that screwdrivers in your toolbox can seemingly change form? (Courtesy: iStock/M_a_y_a) As a new decade dawns, you will be thrilled to learn that I have come across ...

In the Fall I'll be starting teaching again, after a semester away on sabbatical and then enjoying teaching relief during my first semester at Penn. I'll be teaching a course that I truly love, and ...