A race car, of mass 2500kg, is able to accelerate from rest to a final speed of 25m/s in 3.1s. Ignoring air resistance, determine how much power the engine had to produce to create this acceleration

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.

Most short-period comets do not have randomly oriented orbits because