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Questions:<br />
1. Which has more kinetic energy, a semi truck travelling<br />
30km/hr or a bicycle travelling 30km/hr? Why?<br />
2. Water does not always freeze at 0�C it can be cooled to –20<br />
or 30�C if conditions are right. Which has more total thermal<br />
energy, liquid water at -10�C or ice at the same<br />
temperature? Why?<br />
3. You are heating a substance but its temperature is not<br />
increasing what type of energy is being increased? Why?<br />
4. You are cooling hot iron in cold water, what kind of energy is<br />
being lost by the iron? Why?<br />
5. The water in the above question evaporates when the iron<br />
touches it, what type of energy is being increased in the<br />
water? Why?<br />
6. You apply a force of 1000N to a baseball, <strong>and</strong> it travels a<br />
distance of 80m. You apply this same force to a rail car <strong>and</strong><br />
it does not move at all, have you done work in both cases?<br />
Why or why not?
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