Science

9th -

12thgrade

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Forces & Motion

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19 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    When the first American astronauts were planning to walk on the moon, they knew that the gravity on the moon is less than the gravity on Earth. With this information what did the astronauts expect to be the MOST different on the Moon.

    their mass

    their weight

    their height

    their volume

  • 2. Multiple Choice
    30 seconds
    1 pt

    A brick is resting on a level smooth surface. When a student applies a horizontal force of 5 N to the brick, the force of friction on the brick is also 5 N. Which statement BEST describes the effect of these two forces on the brick?

    The net force on the brick is 0 N, and the brick begins to move.

    The net force on the brick is 0 N, and the brick remains at rest.

    The net force on the brick is 10 N, and the brick begins to move.

    The net force on the brick is 0 N, and the brick remains at rest.

  • 3. Multiple Choice
    30 seconds
    1 pt
    Image

    One person pulls on a rope with a force of 400 N to the left. Another person pulls on the rope opposite end with a force of 600 N to the right. What is the unbalanced net force?

    200 N to the right

    400 N to the right

    600 N to the right

    1000 N to the right

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