Which of Newton's Laws Applies?

When the fireman turns on the fire-hose, he is knocked back.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

Jill crashed her bike into the fence.  She was thrown over it onto the lawn.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

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Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

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Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more mass.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

Tags

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A fish swimming through water pushes water backwards with its fins. The water propels the fish forward.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

If you have a hockey puck sliding along a table, it will eventually come to a stop.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

A soccer ball accelerates more than a bowling ball when thrown with the same force.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

Two students are in a baseball game. The first student hits a ball very hard and it has a greater acceleration than the second student who bunts the ball lightly.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

Tags

NGSS.HS-PS2-1

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

A climber pulls down on a rope causing his body to lift upward and rise along the rope.

• Newton's 1st Law (Law of Inertia)
• Newton's 2nd Law (Law of Force and Acceleration)
• Newton's 3rd Law (Law of Action-Reaction)

Tags

NGSS.HS-PS2-1