Revision: Work, Energy & Power Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 08 Work, Energy & Power - Revision Quiz Test your understanding of Work, Energy & Power here: 1 / 5 1) 2023 S3 EOY P1 Q26 A girl of weight 600 N runs up a flight of stairs in 12 s. The vertical height of the flight of stairs is 3.0 m. What is the average power developed by the girl? 1 800 W 21 600 W 0.0067 W 150 W 2 / 5 2) A box of mass 6 kg is pushed horizontally by a 10 N force a distance of 6 m. What is the work done on the box against the weight of the box? (g = 10 m/s2) 0 J 48 J 6 J 120 J 3 / 5 3) A body of mass m is travelling at constant velocity v, up a track inclined at an angle θ to the horizontal. What is the power required to keep it at v, if it experiences a frictional force f? fvg sin θ (fv + mgv) sin θ fv sin θ + mgv fv + mgv sin θ 4 / 5 4) A girl of weight 500 N runs up a flight of stairs in 10 seconds. The vertical height of the stairs is 5 metres. What is the average power developed by the girl? 100 W 250 W 1000 W 50 W 5 / 5 5) A car of mass m has an engine which can deliver power P. What is the minimum time in which the car can be accelerated from rest to a speed v? Your score is Restart quiz
