First and Second Newton's Laws

Force=Mass x Acceleration

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

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While you’re ice-skating with your friends, you push off from one end of the rink and slide forward. Based on Newton’s first law of motion, what is true?

• You will lose your balance and fall over before your reach the middle of the ice rink.

• You will continue to slide across the ice until a force makes you stop or change direction.

• The force of gravity will make you keep your velocity until your friends make you stop.

• The size of your ice skates will determine how quickly or slowly you travel across the ice.

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Your friend kicks a soccer ball, and it stops a few feet from you. What needs to happen to it in order for it to return to your friend?

• Friction has to be applied to the ball.

• Force has to be applied to the ball.

• Speed has to be applied to the ball.

• Inertia has to be applied to the ball.

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The rate at which an object’s velocity changes is called what?

• inertia

• actualization

• acceleration

• completion

If we put the same force on a bowling ball and a soccer ball, the soccer ball will move faster! Which law explains this?

• 1st

• 2nd

• 3rd

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Which law explains that it would take more force to push the car than the lawnmower?

• 1st

• 2nd

• 3rd

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What causes the car to roll of the flatbed truck?

• inertia- First law!

• Mass of the truck- Second law!

• Action reaction of the car Third law!

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According to Newton's second law of motion, if a rigid body of unchanging mass is observed accelerating, what must be happening?

• A force was once applied but is now not being applied.

• The mass must be changing.

• Balanced forces act "all crazy!!!" on an object.

• A force is being applied to the mass.

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NGSS.MS-PS2-2

Why is it harder for Iditarod race dogs to pull a sled filled with a winter's worth of supplies than it is for them to pull an empty sled?

• Because Iditarod dogs go on strike when they have to work harder

• The mass of the sled full of winter supplies is greater than the mass of the empty sled

• The sled full of winter supplies is actually easier to pull

• It should be equally as hard to pull the sled full of winter supplies as it is to pull the empty sled

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You pull a wagon with your Great Dane named 'Baby' in it. How could you accelerate the rate at which you can pull the wagon?

• pull the wagon with less force

• Pull the wagon with more force

• Have Baby gain weight

• Put a bag of Baby's dog food in the wagon

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