A .40 kg brick falls from the top of the Mercedes-Benz stadium at a rate of 20 m/s and has a kinetic energy of 80J. What would be the KE of the brick if it fell at a rate of 10 m/s? A 20 J B 80 J C 40 J D 160 J

Answer quickly (15 points) a comet is approaching earth. describe earth’s gravitational pull as the comet gets closer to it. a. remain constant b. increase c. decrease d. reversed

Two particles of masses m and 2m are placed on a smooth horizontal table. a string, which joins these two masses, hangs over the edge supporting a pulley, which suspends a particle of mass 3m.the pulley has negligible mass. the two parts of the string on the table are parallel and perpendicular to the edge of the table. the hanging parts of the string are vertical. find the acceleration of the particle of mass 3m.

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor