MS PS 2-1 Science CFA #4: Newton’s Third Law

DOK 1: A drummer in a band uses his drumstick to hit a mid tom drum with a force of 2 Newtons. According to the law of action and reaction, which statement correctly identifies the reaction force?

• The force of inertia keeping the drum in place.

• The 2 Newton force of the drum pushing back on the drumstick.

• The force of the drummer's hand holding the drumstick

• The downward force of gravity pulling the drum toward the floor.

Tags

DOK 1

MS PS 2-1

DOK 2: The shopping cart in the picture is moving forward. What force moves it forward?

• The force of the man pushing on the handle.

• The force of the wheels pushing on the floor.

• The force of the floor pushing on the wheels.

• The weight of the shopping cart supplied by gravity.

Tags

NGSS.MS-PS2-1

DOK 2: In canoeing, you paddle backward to go forward. Canoeing can be explained by Newton's third law that says

• The water transfers energy to the boat to make it move.

• Once the boat is moving forward, it will naturally continue to move forward.

• The body of water has a larger mass and will exert a larger force on the paddle then the paddle does on the water.

• As the paddle push the water backward, the water pushes the paddler forward with an equal force.

Tags

NGSS.MS-PS2-1

Dok 3: Consider the collision between the moving cue ball and the red 15 ball that is at rest on the pool table. Which statement does NOT describe what occurs when the cue ball collides with the 15 ball?

• Each ball experiences an equal force directed in opposite directions.

• The 15 ball experiences a rightward force that causes it to speed up.

• The acceleration of the 15 ball is greater than that of the cue ball.

• The moving cue ball experiences a leftward force that causes it to slow down.

DOK 3: In a Balloon Car project, the design criterion is to make the car travel the farthest distance possible. A student modifies their design by replacing a small balloon with a much larger balloon. Evaluate this design change. How does this modification utilize Newton’s Third Law to improve the car’s performance?

Writing Prompt / Evidence Checklist:

• Identify the action force (balloon on air) and reaction force (air on balloon).

• Explain the relationship between the strength of the action force and the resulting reaction.

• Explain how this modification meets the design's criteria and constraints.