https://padlet.com/hannahburt/8r9jxyxbwv21cc2c 5 Concepts in Honors Physics en-us 2020-04-27 15:27:06 UTC 2024-07-14 23:57:45 UTC hello@padlet.com https://padlet.net/icons/png/1f60b.png hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533868331 How do we use these in life?
Newton's 3 Laws describe motion. We experience motion all around us. For example, the cars we drive are in motion unless acted upon by an outside force (i.e. the breaks, another car, etc). When a car is in a collision, the force of its hit is its mass multiplied by its acceleration. In order to stop a car, the breaks must apply a force equal and opposite to the acceleration. ]]> 2020-04-27 15:31:44 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533868331 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533886418 Video:]]> 2020-04-27 15:37:03 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533886418 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533899206 What do I know about these concepts?
These laws were first established by Isaac Newton in 1687. Newton, a brilliant scientist and mathematician, is known for his work with gravity, motion, and force (among other concepts). Newton's Three Laws of Motion describe all moving objects, and they go as follows:
(1) An object in motion will remain in motion unless acted upon by an outside force, and an object at rest will remain at rest unless acted upon by an outside force
(2) Force = Mass x Acceleration
(3) Every action has an equal and opposite reaction
These Laws have been tested and tried for nearly 350 years, and they have proven themselves to be true to this day. ]]> 2020-04-27 15:40:51 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533899206 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533901890 Equations:
F=ma (Force = Mass x Acceleration)
F=mg (Force = Mass x gravity (9.8m/s^2))
F=(-k)x (Force of a spring = Spring constant x Displacement)
a=v/t (Acceleration = Velocity / Time)
v=d/t (Velocity = Distance / Time)]]> 2020-04-27 15:41:38 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533901890 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533917795 Problem:
A 1,200 kg car initially traveling at 20 m/s hits a wall. The driver notices the wall 5 seconds before impact and slows to 5 m/s. With what force does the car hit the wall?
3,600 Newtons

]]> 2020-04-27 15:46:13 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533917795 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533985159 How do we use these in life?
Friction is something we face every day. It exists everywhere in the material world- it is only absent in an imaginary, perfect world. An example of friction could be pushing a heavy box out of your way. When it is stationary, you are fighting static friction. It will remain static until the applied force is greater than the static friction. Once the box is moving, the static friction converts to kinetic friction. It will continue to move until the applied force is removed or it is acted upon by another outside force (such as a wall, gravity, etc).]]> 2020-04-27 16:06:40 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/533985159 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/534006565 Video:]]> 2020-04-27 16:13:11 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/534006565 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/534024706 What do I know about these concepts?
Friction exists everywhere. A world without friction is only imaginable, not attainable. Static friction is stationary, whereas kinetic friction is in motion. Examples of static friction include a heavy box stuck on the ground, a pencil lying on a desk, or a person standing still. Examples of kinetic friction include air resistance, a ball rolling down a hill, or an ice skater. ]]> 2020-04-27 16:18:59 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/534024706 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/534026160 Equations:
Ff = uk x Fn (Kinetic friction = Coefficient of Kinetic friction x Normal Force)
Ff = us x Fn (Static friction = Coefficient of Static friction x Normal force)
uk = Ff/Fn (Coefficient of Kinetic friction = Frictional force / Normal force)]]> 2020-04-27 16:19:30 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/534026160 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/534041156 Problem:
A box is sliding across the ice with a normal force of 10 N. The coefficient of kinetic friction is 0.5. How much kinetic friction is acting upon the box?
5 Newtons]]> 2020-04-27 16:24:26 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/534041156 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556263085 Equations:
W = Fd (Work = Force x distance)
Ek = (1/2)mv^2 (Kinetic Energy = (1/2) x mass x velocity^2)
Ep = mgh (Potential Energy = mass x gravity x height)
EP = (1/2)kx^2 (Elastic Potential = (1/2) x spring constant x distance^2)
P = delta Energy / delta time = work / delta time (Power = delta Energy / delta time = work / delta time)
E = P x delta t (Transferred energy = power x delta time)]]> 2020-05-07 01:34:03 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556263085 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556268187 What do I know about this concept?
Energy can be defined as "movement" or "the ability to do work." Energy exists in 6 forms: kinetic, gravitational potential, elastic potential, thermal, electrical, and chemical. Examples of each are as follows: a car moving down a road is thermal, weightlifting is gravitational potential, bungee jumping is elastic potential, ice melting is thermal, static electricity is electrical, and propane is chemical. Energy is measured in Joules, which is written as "J." The difference between Work and Energy is (1) Energy is the ability to do work, (2) Work must be done in order for Energy to be transferred between objects, and (3) Work must be done for Energy to change from one form to another. The Law of Conservation of Energy states that Energy can be neither created nor destroyed in an isolated system, only converted. ]]> 2020-05-07 01:39:16 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556268187 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556284353 Problem:
A bike is moving down a road at 20 m/s. The bike weighs 10 kg, and its rider weighs 60 kg. What is their Kinetic Energy? 
14,000 J]]> 2020-05-07 01:56:05 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556284353 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556289506 Equations:
Wf = umgd = (1/2)mv(final)^2 - (1/2)mv(initial)^2 (Frictional Work = u x mass x gravity x distance = (1/2) x mass x final velocity ^2  - (1/2) x mass x initial velocity ^2)
W = delta E (Work = final Energy - initial Energy)
W = Fd (Work = Force x distance) ]]> 2020-05-07 02:01:32 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556289506 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556293318 What do I know about this concept?
Work can be defined as the "change in energy." When calculating Work, you can cancel out what doesn't apply to the situation: for example, velocity can be cancelled if the object is not in motion. The difference between Work and Energy is (1) Energy is the ability to do work, (2) Work must be done in order for Energy to be transferred between objects, and (3) Work must be done for Energy to change from one form to another.]]> 2020-05-07 02:05:39 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556293318 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556298288 Problem:
A car with a mass of 1,000 kg is going 50 m/s. How far does it go if it running on a 100 N force? 
12,500 m]]> 2020-05-07 02:11:11 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556298288 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556301288 Equations:
p = mv (momentum = mass x velocity)
J = F x delta t = delta p (Impulse = Force x delta time = delta momentum)
m1vi + m2vi = m1vf + m2vf (mass 1 x initial velocity + mass 2 x initial velocity = mass 1 x final velocity + mass 2 x final velocity)]]> 2020-05-07 02:14:31 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556301288 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556310751 What do I know about this concept?
The final minus the initial momentum in a situation is equal to the impulse. Both momentum and impulse are vectors, meaning they are dependent on signs and direction. Momentum can be defined as the "persistence of motion," whereas impulse is the "change in momentum." Similarly to energy, the Law of Conservation of Momentum states that momentum can be neither created nor destroyed. Three examples of momentum are (1) a bike rolling down a street, (2) a bowling ball rolling down and alley, and (3) a man running through a finish line. Momentum and impulse exist in two types of collisions: inelastic and elastic. In an inelastic collision, the object in motion sticks upon impact; in an elastic collision, the object in motion bounces back upon impact. ]]> 2020-05-07 02:24:51 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556310751 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556317014 Problem:
A 10 kg cart is rolling down a hill at 15 m/s, and it slows to 5 m/s at the bottom of the hill. What is its impulse?
-100 kg m/s]]> 2020-05-07 02:31:27 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/556317014 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/557978210 How do we use this in life?
Energy exists everywhere. There is nothing without energy. Any movement is fueled by energy. An example of energy in everyday life is working out. Multiple forms of energy are exerted in a work out: gravitational potential when lifting weights, kinetic when running, and thermal and chemical within your body. ]]> 2020-05-07 16:43:40 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/557978210 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/557997258 How do we use this in life?
An example of work in everyday life is rolling a bowling ball down and alley. Force must be exerted to back the bowling ball, then the ball with go a distance and speed dependent on the force. ]]> 2020-05-07 16:49:51 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/557997258 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/558007036 How do we use these in life?
Momentum and impulse can be best seen in car wrecks. If someone were to rear end another car ahead of them, for example, the damage would be dependent on each car's mass and velocity. If a small car hit something going slowly, the damage wouldn't be terrible; however, if a large car hit something going quickly, the damage would be much greater. ]]> 2020-05-07 16:53:18 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/558007036 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563374588 2020-05-10 20:27:23 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563374588 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563375997 2020-05-10 20:28:25 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563375997 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563377172 2020-05-10 20:29:15 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563377172 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563379981 2020-05-10 20:31:16 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563379981 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563380685 2020-05-10 20:31:47 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563380685 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563383341 Video:]]> 2020-05-10 20:33:34 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563383341 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563396302 Video:]]> 2020-05-10 20:43:25 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563396302 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563397006 Video:]]> 2020-05-10 20:44:00 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563397006 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563725389 Video part two:]]> 2020-05-11 02:30:20 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563725389 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563727474 Video part two:]]> 2020-05-11 02:32:46 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563727474 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563730037 Video part two:]]> 2020-05-11 02:35:47 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563730037 hannahburt https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563734353 Video part two:]]> 2020-05-11 02:40:51 UTC https://padlet.com/hannahburt/8r9jxyxbwv21cc2c/wish/563734353