3. A bowling ball that weighs 70 N is dropped from a tower 15 meters above the ground. Disregarding air friction, what is the kinetic energy of the ball when it reaches the ground?
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What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

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.

This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.