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In this padlet, all five sections of Mr. Reddick's sciences classes will get to discuss the limitations of Newton's Laws. The goal is to think about the situations in which Newton's Laws of motion are useful and try to identify some cases in which Newton's Laws are perhaps not applicable.

To do this, students can post scenarios in which Newton's Laws will work well (green cards), scenarios in which they are not sure (yellow cards), and scenarios in which they think Newton's Laws may not apply (red cards).

Then, on each of these examples, students can post questions, evidence, or logical arguments about whether or not Newton's Laws apply to the scenario, and explain why!

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If you think you have a scenario for which Newton's Laws work well, please type it into the column for the law that would apply to it, and make the background of your note green!

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If you write up an example of motion that you are not sure about, please make these comments yellow! Do your best to place it in a reasonable column based on which law you are not sure applies well.

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If you can think of an example of motion that one of Newton's Laws does not apply to, then please type it up and make the comment background red!

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push a 10-kilogram object with a force of 20 Newtons, it will accelerate at 2 meters per second squared due to the relationship between force, mass, and acceleration.

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I pull them let go of one end of a sticky hand, the sticky hand pulls back together

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a book staying still until pushed or a ball rolling unless stopped by something.

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The bike will keep moving until it hits a pothole.

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What happens when two objects run into each other?

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We are able to find the amount force being applied to a moving object when given the acceleration and mass of the object using Newton's second law of motion, creating an equation, F= ma, with F = Force, m = mass, and a = acceleration.(RV)

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Gravity is classified as an object but does not take up space and does not have mass. This means that we are unable to use F = ma to find the force of gravity.(RV)

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Gravity is the warping of spacetime caused by an object.

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Are we able to find the force of energy with F = ma.(RV)

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A vase stayin still untill something knocks it over or a moving object stopping.

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A vase stayin still untill something knocks it over or a moving object stopping.

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Throwing a ball against the wall will make the force between the ball and wall push the ball of the wall and bakc to where it was originallt thrown if it has equal gravity coming towards and off the wall. 

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Throwing a ball against the wall will make the force between the ball and wall push the ball of the wall and bakc to where it was originallt thrown if it has equal gravity coming towards and off the wall. 

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you roll a bowling ball into a lane until it hits the pins.

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a box stays still unless pushed by another force.

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An objects being able to sit still without somethinf interupting the f=ma

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An objects being able to sit still without somethinf interupting the f=ma

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When objects are moving near the speed of light, a net force may no longer cause an acceleration, or the same amount of acceleration, as when the object is moving at normal velocities.

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Some microorganisms with flagella (tiny tail things that help them move) have a very "odd elasticity" which don't cause an equal and opposite reaction on it.

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Could we find the acceleration of an electron by F = ma?

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When a person is standing, the ground would be pushing on the ground, the ground pushes up on it.

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what if an object accelerating down a hill hits an object but the object accelerating continues to accelerate

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if I blow air out of my mouth, than the air wouldn't be opposite to the force I used to accelerate it out of my mouth.

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This statue stays completely still standing on the ground below it. It will remain at rest like this unless an external force (like a person pushing it over) acts on it and makes it move.

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I'm not sure if Newton's 1st Law applies to this example, because according to the 1st law it should stay in motion (spinning) unless acted on by an outside force, but the spinning top stops spinning eventually no matter what. Is this due to an outside force or because it fell on it's own?

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A hockey puck is an example of something that does not obey Newton's 1st Law of Motion because it can switch between resting and moving immediately without outside forces acting on it.

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A bullet being fired out of a gun is a good example of F = ma because the bullet has mass and the force of the gunshot's explosion causes it to accelerate.

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I'm not sure if light or the speed of light is a good example of F = ma because light is lacking mass but includes force and acceleration.

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Gravity is not always an example of F = ma because it always has force and mass, but not always acceleration. When something is at rest, it can't be accelerating, but gravitational force can still be enacted onto it.

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Action force is gravity pushing skydiver down, and reaction force is normal force and the air pushing against him.

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How do the air molecules on Earth deal with opposing and equal forces?

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The sun has such great mass that there isn't an equal and opposing force going against it.

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a table staying on the ground until it is pushed to the side

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This may show f=ma but I'm not sure if it has mass and weight.

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this doesnt follow the tird law and it can rest and move weird on the ice.

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A ball rolling until it is stopped by someone's foot.

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A 5-kg object being pushed with a force of 10 Newtons will accelerate at a speed of 1 meter per second.

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When you jump, you push down on the earth, and the earth pushes up on you.

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Riding straight until they hit a wall that stops them

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A runner has mass, and the running is accelerating.

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Jumping up and the trampoline pushing down

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When a person is on a trampoline and they push down on it, they that force they exert causes the trampoline to push back with the same force, causing the person to bounce.

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On a merry-go-round, the force comes from acceleration, not an outside interaction, making the force not really have a reaction pair.

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If a small marble is spinning on a vinyl, it will appear to curve to someone watching it spin.

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When someone catches a football that was thrown at them, it stops moving because of the outside force (the person's hands)

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The bookshelf stays on the ground until it's moved and put somewhere else

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When the baseball player hit the ball, the baseball and baseball bat would feel the same amount of force because of Newton's third law

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A computer sitting still on a desk, the object is not being acted on by any other forces, other than the normal force and gravity, then the computer starts moving to the left.