1. I have this tough question on power and work. "Calculate the power required of a 1400 kg car under the following circumstances a) the car climbs a 10 degree hill at a constant velocity of 80km/hr. b) the car accelerates along a level road from 90 to 110 km/hr in 6 seconds. Assume in both cases that the retarding force on the car is 700 newtons.(air resistance and friction). Calculate the power in HP. Assume that only 60% of tehcars engine delivers power to the wheels. If the cars engine is rated a 150 HP, does it have enough power to accomplish both tasks? 2. W=FD P=W/T P=VF KE=.5m(v(squared) 3. I don't really know how to start. I can't seem to get the force in the first scenario of the hill. Would the force be 700 newtons? as there is a -700 newton force acting on it? so 700*cos10*d = work. I don't know what D is though. Or can I use the Ke equation to get the work of the first situation? Would the angle affect that answer in anyway?