Add physics questions by Christina Merz

Module 3 Lesson 3 Question

krogers90270 — 2025-10-15 16:05:34 UTC

I had a question on the last Critical thinking question. It asks a very interesting question, and it had me a bit stumped. Can we go over it?

Critical Thinking: A ball thrown vertically upward continues upward until it reaches a certain position, and then falls downward. The ball’s velocity is instantaneously zero at that highest point. Is the ball accelerating at that point? Devise an experiment to prove or disprove your answer.

2025-10-15 17:09:37 UTC

One question I had was in an equation how do I find the acceleration? It's probably the hardest one to find in my opinion but also hypothetically would seem the easiest.

what are the important equations we need to mmemorize right now?

2025-10-15 17:14:12 UTC

bhughes67329 — 2025-10-15 17:14:12 UTC

When doing practice problems, I realized that using different equations made me obtain different, varying results (even when I was solving for the same thing). I was wondering why this happens? Even if different formulas include different variables (displacement, velocity, time, acceleration), shouldn't I get the same answer as long as I plug in the correct numbers and solve for the same thing?

Question

ks91414 — 2025-10-15 17:15:49 UTC

What would be the best source for understanding the various equations and laws in physics that we'll be going over in our schoolwork and homework?

bhughes67329 — 2025-10-15 17:29:00 UTC

do we have to always include negative values for downward acceleration and velocity when solving problems?