Newton's Laws of Motion Study Guide-8th grade

Match the following

• Newton's Second Law of Motion

• An object at rest will stay at rest and an object in motion will stay in motion unless an unbalanced force acts upon it

• Newton's Third Law of Motion

• States that for every action there is an equal and opposite reaction.

• Friction

• Force that opposes motion between two objects that are touching; shows the objects not wanting to move

• Unbalanced

• This type of force is causes an object to move.

• Newton's First Law of Motion

• Acceleration of an object depends on the force exerted on it and its mass. Object with greater mass requires greater force in order to move.

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NGSS.MS-PS2-2

Devin and Kyran are being silly in math class. They decide to slide their Chromebooks into each other to see what will happen. No one said Devin and Kyran were the brightest bulbs. If they both slide their Chromebooks (same size and mass), what will happen when the Chromebooks hit each other?

• Mrs. Broussard will send them to see Mr. Mire

• The Chromebooks will bounce back

• Only 1 Chromebook will bounce back

• The friction on the desk will cause the Chromebooks to not move.

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Dak is having a bad day. He misses his woman, Shannon. He decides to blow up a balloon during film time and then let go of it. He knows Coach will get super mad because the balloon will go flying all over the room. What concept is being shown when the balloon flies around the room?

• Object at rest

• Connections between mass and force

• Action/Reaction forces

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How is this an example of Newton's Third Law of Motion?

• The amount of force they use to push down propels them up.

• The Shuttle is at rest so it will stay at rest.

• The mass is equal to the gravitational pull.

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How is this an example of Newton's 1st Law of Motion?

• The puck is waiting for an equal and opposite reaction

• The puck is stopped due to friction on the ice.

• The puck is at rest so it will stay at rest until an unbalanced force acts upon it.

Kaine pushes a hot wheel car 50 feet down the road and John pushes a bus 50 feet down the road. Who will need to use MORE FORCE to get their vehicle to move?

• Kaine

• John

• Neither --both should use the same amount of force

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NGSS.MS-PS2-2

Butter is riding his bike at a pretty fast pace. He suddenly hits a pothole in the road and flies over his bike and onto the pavement. Which of Newton's Laws best describes why this happened?

• Law of Inertia

• Law of Action/Reaction

• Law of Force & Acceleration

Logie pushes Luke's sled. He falls backward into the YELLOW snow. Which law is at work?

• Law of Force and Acceleration

• Law of Inertia

• Law of Action/Reaction

Hunter wants to get a bowling ball and a basketball to accelerate at the same rate. He already knows that the bowling ball has a lot more mass than the soccer ball. What does he need to do to get both of them to accelerate at the same rate? (roll next to each other)

• Push them with the same amount of force

• Push the basketball with more force than the bowling ball

• Push the bowling ball with more force than the basketball.

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NGSS.MS-PS2-2

Jonathan is on a sled at the top of the hill. Gavin pushes him. The sled starts moving. Which law is at work?

• Law of Force and Acceleration

• Law of Action/Reaction

• Law of Inertia