A drag car, of mass 500 kg, accelerates from rest to a speed of 144 km/h. What is its final speed in: im/h (metres per hour) il m/s? What is the increase in KE of the drag car? What is the average power developed by the drag car's engine?

The lid of a pressure cooker forms a nearly airtight seal. steam builds up pressure and increases temperature within the pressure cooker so that food cooks faster than it does in an ordinary pot. the system is defined as the pressure cooker and the water and steam within it. if 2.0 g of water is sealed in a pressure cooker and then vaporized by heating, and 5127 j must be added as heat to completely vaporize the water, what is the change in the system’s internal energy? answer in units of j.