Recent content by jamesnb

You don't need to do all of that. You already know how fast the ball is moving when it leaves the table from step 4 of the procedure. The ball will continue to move at this velocity in the horizontal dimension until it hits the floor. So for the horizontal dimension, there is no acceleration...

At least give us the variables in symbol form. You've got to show some effort.

You are using the wrong values for the masses. Think about how you would set up the problem if the question simple asked what is Gerald's attraction to the Earth.

Focus just on the horizontal dimension first. As the marble leaves the table, what is the initial velocity? What is its horizontal velocity just before it hits the floor (Vf)?

LOL physics (or what ever). True.

You had mentioned horizontal or inclined. I was reading more into it. Thanks. I do the inclined plane with the car at rest because there is a test problem with a similar drawing stating the car is at rest, what can you conclude about the forces? (they are balanced). In the honors classes we...

How far is Gerald from the center of the moon? How far is Gerald from the center of the Earth?

What to you think the values for the variables are in each dimension? The values you have for the horizontal (X) dimension part are incorrect. You only need one equation to solve for one variable vertically and only need one equation to solve for one variable horizontally. Have you studied...

Is calculus a prerequisite for the physics course? Are you taking algebra based physics or calculus based physics?

Except mind your units. The force is in Newtons.

Dejahboi, that's what I got.

frogjg, going back to impulse and acceleration, isn't impulse the first derivative of acceleration? Meaning if acceleration is constant, there is no impulse?

Don't forget they asked for force to stop the car and work done by the brakes.

You've got it.

Yup, then how would you find work?