School Improvement in Maryland

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Standard 5.0 Physics

Topic A. Mechanics

Indicator 2. Explain that the changes in the motion of objects are determined by the mass of an object and the amount (size) of the force applied to it.

Objective b. Observe and explain the changes in selected motion patterns using the relationship between force and mass.

Selected Response Item

Read the passage 'Free Fall' to answer the following.

The seats in a car of a free-fall ride are replaced with heavier seats.

This change requires

  1. more force to lift the car
  2. less time to stop the car
  3. a lower rate of speed
  4. a higher rate of speed
/share/assessment_items/xml/items/msa_science_5_004.xml

Correct Answer:
A

Selected Response Item

A car and a truck move on a road in the same direction at the same speed. Both vehicles slow down with the same stopping force.

Question Image

Which statement best explains why the truck needs more distance to stop?

  1. The truck is longer.
  2. The truck has more mass.
  3. The truck has larger wheels.
  4. The truck has a larger engine.
/share/assessment_items/xml/items/msa_science_5_041.xml

Correct Answer:
B