1.  Ashley dried some plant roots in the oven. She found that the mass of the roots changed by30%. The mass after drying was30grams. What was the mass before drying? Round your answer to the nearest whole number.

 2.  Eric prepares an ice bath to cool a beaker of reagents. It is rather warm in the room that day (28C), and the beaker begins to cool at a rate of6C per minute. At that rate how long will it take the beaker to get to3C?


3.  If a dense plastic block is dropped into a tank of water, it experiences a change in velocity of5m/s. If the original velocity was18m/s, what was the velocity immediately after it hit the water?

 4.  Three cars came to a sudden stop on the highway. The acceleration of one was26m/s^{2}. The acceleration of another was35m/s^{2}. The acceleration of the other car was exactly halfway between the other two accelerations. What was the acceleration of the third car?


5.  Thomas has not been too successful when running the quarterback sneak play for the Smallville football team this year. On seven attempts, he has achieved the following results (in yards):1,0,1,3,2,5, and2. What is his average yardage on the quarterback sneak? Round your answer to the nearest tenth.

 6.  *Questa è una scheda preparata. Utilizza il link nella parte superiore della pagina per ottenere una pagina stampabile. 
