CONCLUSION - Answer the following questions in complete sentences.
1. Analyze your velocity graph. What effect does increasing the mass have on velocity?
2. Analyze your KE graph. What effect does increasing the mass have on KE?
3. Compare the 2 graphs mentioned above. On which graph do increases in mass have
the greatest effect? Support your answer.
4. In this lab we manipulated the mass. What is another variable that we could have
manipulated?
5. Infer what the largest source of error was in this lab.
6. If there is an error in timing in this lab, predict which of the 2 graphs (Velocity or
KE) would be affected the most?
7. Analyze your velocity graph and predict the expected velocity of a mass of 0.33 kg.
Support your answer by placing prediction lines on the graph.
8. Analyze your KE graph and predict the expected KE of a mass of 0.33 kg.
Support your answer by placing prediction lines on the graph.
9. Analyze your KE vs. PE graph. Why are the KE values in this lab always lower than
the PE values.
SOLVE THE FOLLOWING - Show formula, substitutions, labels, and round to hundreths.
1. A mass of 8 kg. moves at a rate of 14.3 m/sec. Calculate the KE.
2. A mass of 0.34 kg. moves at a rate of 22.7 m/sec. Calculate the KE.
3. A mass of 1.53 kg. moves down a 10 meter ramp in 4 seconds.
Calculate the velocity and KE.
4. A mass of 0.07 kg. moves down a 10 meter ramp in 10 seconds.
Calculate the velocity and KE.
5. A mass of 1500 grams moves down a 1 meter decline in 1 second. Calculate the KE.
Calculate the velocity and KE. (Be careful with this one.)