2
2.3.2 Quiz: Work and Power
Question 1 of 10
2 Points
A boy performs 100 J of work pushing a chair a distance of 4 m. How much
force does the boy use? Assume there is no friction
O A. 200 N
O B. 400 N
O C. 100 N
Oo
O D. 25 N
SUBMIT

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery