An unknown force pushes a 17 kilogram block across a smooth (frictionless) floor. three seconds after the force is first applied to the block, the block is moving with a speed of 6 meters per second. what is the magnitude of the unknown force?

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

prolly a beacuse the momentuem the car has increases while going down hill