The acceleration of a 2.00 kg object is shown below. If as=6.0 m/s2, and the object starts from rest, then what is the velocity of the object at x = 9.0 m? Hint: Use F=ma to turn an a vs x graph into a F vs. x graph. Determine work using the area under the curve, then use the work energy theorem to get v.

The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?