If you went to a 480 m high waterfall and dropped a ball and allowed it to fall all the way down how long would it take to fall to the bottom ignoring air resistance?

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages