Question
Are exerts a force of 500 N against a 200-kg desk that does not move. Virgil exerts a force of 400 N against a 60-kg desk that moves 1 m in the direction of the push. Mik exerts a force of 200 N against a 50-kg desk that moves 5 m in the direction of the push. The most work is done try Virgil Mik Virgil and Mik, who do equal amounts of work. Suppose you climb the of and eight-story building, about 24 m high, and your mass is 70 kg. The gravitational potential energy you gain is about 16,500 calories, 40 calories, 18,500 joule. 40 joule. Virgil sides a [combined mass 100 kg at 4 m/s, and jill rides a bicycle (combined mass 64 kg at 5 m/s Virgil has the greater kinetic energy. has the greater kinetic energy. Virgil and all have equal kinetic energies. A ball at the end of a string is swinging as a simple pendulum. Assuming no loss in energy due to friction, we can say for the ball that the potential energy is maximum at each end of the motion. the mechanical energy charges and is maximum where the kinetic energy is minimum, the mechanical energy charges and is maximum where the kinetic energy is maximum the kinetic energy does not change but the potential energy does. If the speed of a car is doubled but the brakes apply the same force the distance required to stop the car changes by a factor of 1/4 1/2 1 2 4
Explanation / Answer
26.Work done is equal to force into displacement.
W=F*d
work done by first person is zero.
work done by second person is 800J
work done by third person is 1000J
so,option c is correct.
