Determine the kinetic energy of a 7000-N roller coaster car that is moving with a speed of 10 m/s

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

The two required components for a generator