You move a box 5 meters and perform 900 joules of work. how much force did you apply to the box?
i'm so confused

Which are examples of projectile motion? choose all that apply a. a soccer ball rolling across the ground in the northeast direction b. a car turning a corner, so it is heading south c. a javelin flying through the air d. a tennis ball lobbed over the net

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging