PAGE THREE: Mass and Inertia
- Use this explanation of mass from the University Corporation for Atmospheric Research to answer this question:
- Which of these statements is true?
A. A basketball has more mass than does a ping pong ball.
B. A book has more mass than does a single sheet of paper.
C. A pickup truck has more mass than does a bicycle.
D. All of the above.
E. None of the above.
Use this glossary from NASA to find a definition for inertia and read this definition for inertia from Funderstanding to answer these questions:
- According to these definitions, which of these is a true statement about "inertia":
A. If a skateboard is sitting motionless on a sidewalk, its inertia will cause it to remain motionless until a force is applied to make it move.
B. If a skateboard is rolling down a sidewalk, its inertia will cause it to continue to roll until a force is applied to make it stop.
C. A and B are both true.
D. A and B are both false.
- Which will have the greater inertia?
A. A smaller truck with less mass.
B. A larger truck with greater mass.
C. Both will have the same inertia.
- Which of these statements is true?
A. The more inertia an object has the harder it is to put it into motion.
B. The more inertia an object has the harder it is to stop it once it is in motion.
C. A and B are both true.
D. A and B are both false.
- Which of these statements is FALSE?
A. A moving object will continue to move until stopped by a force.
B. A moving object eventually runs out of force, slows down and stops.
C. A moving object continues to move in straight line until its direction is changed by a force.
C. A, B and C are all false.
D. A, B and C are all true.
Use this screen from the BBC to observe the results of pushing the little red truck and the big blue truck, and to answer these questions.
- From your observations, which of these statements is true?
A. The big blue truck has more mass than the little red truck.
B. The big blue truck has less mass than the little red truck.
C. A and B are both false.
- From your observations, which of these statements is true?
A. The big blue truck has more inertia than the little red truck and requires more force to put it into motion.
B. The big blue truck has less inertia than the little red truck and requires more force to put it into motion.
C. The big blue truck has more inertia than the little red truck and requires less force to put it into motion.
D. The big blue truck has less inertia than the little red truck and requires less force to put it into motion.
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