Work Energy Power |6 Questions| With Correct Answers.

Calculate the work done by a 2.4 N force pushing a 400. g sandwich across a table 0.75 m wide. {Ans: 1.8 J}How much power does it take to lift 30.0 kg 10.0 m high in 5.00 s? {Ans: 588 W}Calculate the work done by a 47 N force pushing a pencil 0.26 m. {Ans: 12.22 J}What is the gravitational potential energy of a 61.2 kg person standing on the roof of a 10-story building relative to the tenth floor (each story is 2.5 m). {Ans: 1500 J}If a small motor does 520. J of work to move a toy car 260. m, what force does it exert? {Ans: 2 N}Calculate the kinetic energy of a 45 gram golf ball travelling at 20. m/s {Ans: 9 J}