Recent content by Sciencelover91

Homework Statement Derive the mirror equation for a convex mirror (Si*So=f^2). Do not use a Ray heading toward the center of curvature point (C). Si - distance between the object's image and the focal point. So- distance between the object and the focal point. Do- distance between the mirror...

Homework Statement In the diagram above, a box of mass .385 kg is sliding at the right at 1.55 m/s across a frictionless surface when it falls into the hole shown. a) How fast is it moving when it passes point P? b) How fast is the box moving when it passes through the bottom of the hole the...

Is the acceleration negative because it is slowing down? And to solve for change in x, you do not use .5 s at all?

Okay thank you!

There is kinetic friction, you stopped applying force which was equal to Fs so those cancel out. Gravity and normal force cancel out too. So the Fnet is kinetic friction, when it was being pushed it was Fs-Fk so it's different.

I used a = 1.07 m/s^2. Also I used 1.07 m/s^2.

I did (.54 m/s)^2 = 0 + 2 (1.07m/s^2)(change in x) and got change in x = .136 m but the correct answer is .0875m so I don't know how. Also why does the friction force drop that much?

Homework Statement A wooden pallet carrying a load of 600 kg rests on a wooden floor. (s= .28 and k= .17) a. A forklift driver decides to push it horizontally instead of lifting it. What force must be applied to just get the pallet moving from rest? b. After a bit of time, the driver pushes the...

I just remembered what Newtons stood for so the units cancel out, which leaves me with m/s^2 sorry. Thank you!

I am a little confused though because from my work, the units do not work out, I do not have seconds in answer and I am not given any information regarding time (seconds) so I assume I would have to incorporate initial/final velocity into my answer. Because otherwise I would be assuming m/s^2...

Homework Statement Imagine you were to connect your spring from this experiment to a 1.0 kg lab cart. You pull the car back and stretch the spring 30 cm, then release the car from rest, assuming there is no friction. A) find the acceleration at the instant when the cart is first released. B)...

Hello, I am Sciencelover91 and I am a junior. I am taking AP Physics, and I came across this website several times for assistance so it's nice to join!