what is the horsepower of a 14700 newton car that can go to the top of a 360.0 m hill in exactly one minute?what is the kinectice engergy of a 30 gram bbullet that is traveling at 200.0 m/s?a 12 kg box is lifted 15 m above the gorund by a construction crane, How much work did the crane do on the box? Ho wmuch gravitational potential energy does the box have relative to the ground after being lifted?
Hello AR, power work / time force displacement / time Hence power 14700360 / 60 88200 J Hope you know 1 HP - JUsing that you can get HP 2) KE 1/2 m v^2 1/2 0.03 40000 600 J 3) Work done by the crane Weight displacement 12 9.8 15 Hence W 1764 J So the PE stored in the box will be 1764 J
