A child makes a ramp to push his toy truck up to his sandbox. If he uses 16 N of force to push the 64 N truck up the ramp, what is the mechanical advantage of his ramp? If your
answer is a decimal, round to the nearest whole number.

An object is moving east, and it’s velocity changes from 65m/s to 25m/s in 10 seconds. which describes the acceleration?

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity