A game show contestant won a prize by pushing a bowling ball 20 m using his nose. The amount of work done was 1470 J. How much force did the person exert on the ball?

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

iron would move it is magnetic there is a mag field around the current in the wire

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.