Unit 4 - Forces and Motion Lessons Quizzes

Which of the following objects will have the greatest change in motion?

• A small force is applied to an object with a large mass

• A small force is applied to an object with a small mass

• A large force is applied to an object with a large mass

• A large force is applied to an object with a small mass.

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Raoul throws a ball into the air and watches it go up for a long time. Then it starts to fall back toward him. What force causes the ball to return to the ground?

• friction

• gravity

• motion

• wind

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Arrows represent the forces applied to an object. A longer arrow means a greater force. Which object will move upward?

• A

• B

• C

• D

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When an unbalanced force is applied to an object, the object moves in the direction of the force. Which graph shows how the same force will affect the motion of objects that have different masses?

• A

• B

• C

• D

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Two boys are about to use the same force to push a parent and a child. Which describes what will happen?

• The parent will swing higher

• The parent will accelerate faster

• The child will accelerate faster

• The parent and the child will accelerate at the same rate

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Tori tests how far three identical toy cars travel under three different conditions.

How is Tori controlling variables for each trial?

• The mass and force change.

• Neither the mass nor force changes.

• The mass changes, but the force does not change.

• The force changes, but the mass does not change.

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Stefan pushes a cart with three books so it just reaches the end of a track. He puts six books onto the cart. What must Stefan use next time so the cart reaches the end of the track?

• less force

• more force

• the same force

• a different cart

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How can Ryan improve an experiment he designed?

• by repeating each measurement

• by adding uncontrolled variables

• by trusting his opinions

• by changing data that do not fit

Kaneesha pushes a toy truck and lets it roll across a flat surface. She measures the distance it travels. Then she adds different numbers of wood blocks to her truck. Which is most likely the measurement missing from the table?

• 12 cm

• 30 cm

• 57 cm

• 98 cm

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If Alonzo wished to determine how the size of a force affected the motion of an object, which of the following would be the best strategy for his experiment?

• propel several toy cars of different shapes and designs across a surface using a rubber band

• propel a toy car across a flat surface using a rubber band stretched to three different degrees

• propel a toy car across flat and sloped surfaces using a variety of objects, including rubber bands

• propel three toy cars of different masses across a flat surface using a rubber band stretched to the same degree each time\

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