A 2 kg ball has an initial velocity of 8 m/s. How high up the ramp will it go?

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

What happens to an isotope during radioactive decay?

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.