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https://drive.google.com/file/d/1tlnqePkUHe5nyTU7NKeVCas-fRVrjOEh/view?usp=sharing

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https://drive.google.com/file/d/17TuQmVi-cyeE1LEd_5Woy2e-UnYnv2dp/view?usp=sharing

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https://drive.google.com/file/d/1RuaXM04k9WnLVNodf9yakXWLeugSnxrk/view?usp=sharing

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https://drive.google.com/file/d/1v3_OoFpa9IhrJzO3jgYYpMmCdJokYG4l/view?usp=sharing

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https://drive.google.com/file/d/1FM69J9K0btCegQry49UEWL6qtn6lHsYp/view?usp=sharing

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- Since momentum is multiplying the mass (kg) by the velocity (m/s) the unit for momentum is kg m/s
-Since impulse is the change of momentum it has the same units kg m/s

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Simple machines are used everyday. When I drive to school, I am using a steering wheel, which is the wheel and axle. Any ramps are inclined planes. When you open your garage door, that is using a pulley. Scissors are a great example of a wedge and used during crafts or just any day where you need to cut or wedge something apart.

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We see free fall and gravity so much throughout our every day lives. Gravity is simply the force pushing down on us causing us not to just be floating. It is also what makes space, space. There is no gravity so everything is just floating, like Earth. Free fall is seen when you just drop something or if someone jumps into a pool.

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When you think about bowling or track you can see the use of momentum. If you use a heavier bowling ball, according to the first equation, the ball will have a greater momentum. In track if someone increases their velocity and is running faster they will have more momentum and that is why people do not just stop once they cross the finish line. With more momentum, it is harder to stop.

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You can see acceleration all throughout the world everyday. If you are driving to school and you have to stop at a light. Then you have to go because it turns green, you are using acceleration since the velocity is not constant, it is changing. Your velocity goes from moving, to stopping, and to moving again.

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Newton's Laws are so important in understanding how our world works. For example with the first law if someone threw a ball into space and wondered why it never came down, its because of the first law. In space there would be no gravity, friction, or air going against the ball. And since there are no forces acting on it will remain in motion. The second law explains why it is easier to lift something empty compared to something full. Since the mass is greater, it requires more force, just like the equation from the second law. The third says there will be an equal and opposite reaction to your action. So if you jump off a diving board and push downwards with your feet, the board reacts by pushing back up and ultimately sends you upwards.

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MA  = F o / F i = L i / L o

MA ideal = di / do

MA wa = r w /r a

MA g = r o /r i

GR (gear ratio) = input teeth / output teeth = output turns / input turns

MA g = τo /  τi = output teeth / input teeth

MA ramp = L ramp  / h ramp

MA wedge = L  / h

MA screw = 2 L  / p

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A 70 kg mass is placed on the end of a first-class lever. At the other end, a force of 300 N is applied to balance the lever. What is the mechanical advantage of the lever?

Fo= 70(9.8)
Fo= 686 N
Fi= 300 N
686/300= 2.287
MA= 2.287

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Taylor throws a baseball straight up at 19 m/s. What is the ball's velocity after 2.7 seconds?

v0= 19 m/s
t= 2.7
a= -9.8 m/s^2

19 + (-9.8)(2.7) = -7.46
v= 7.46 m/s

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A bowling ball has a mass of 6.0 kg and is traveling with a velocity of 10 m/s down the lane. How much momentum does it have?
m= 6.0 kg
v= 10 m/s
6(10)= 60
p= 60 kg m/s

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Sam is at rest and then decides to skate at 12 mph north towards his friends house. It takes him about 120 seconds. What is Sam's acceleration?
v1= 0 mph
t1= 0 sec
v2= 12 mph
t2= 120 secs
12-0= 12
v= 12 mph
120-0= 120
t= 120 secs
12/120= 0.1
a= 0.1 m/s^2

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Lauren is shopping and pushing her 4 kg frictionless cart. She does this with a force of 12 N. What is the acceleration?
m= 4 kg
F- 12 N
F/m = a
12/4 = 3
a = 3 m/s^2

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Machines are helpful for us accomplishing tasks by changing the direction or magnitude of a force that we apply. Simple machines is a mechanical system where an  input force is applied directly and creating an output force through a single motion. A simple machine has no source of energy only the instantaneous work  that the input force does. There are six types of simple machines: the lever, the pulley, the wheel and axle, the inclined plane, the wedge, and the screw. The physics of how they operate divides the six types into two groups: the levers and the inclined planes.

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Gravity is the universal force of attraction between two objects. On Earth all people and things have a weight that go against gravity that the Earth's mass exerts on the item or person. That downward force is proportional to their mass. A free fall takes place when an object foley moves under the influence of gravity, regardless of the direction. Near the Earth's surface the free fall objects have a downward acceleration of. 9.8 m/s^2. Terminal velocity normally takes places within a few seconds of the object being dropped. Terminal velocity is just the final maximum velocity an object reaches because of air resistance.

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When an object is moving, it has momentum. It refers to the quantity of motion someone or something has. Momentum can be defined as "mass in motion." All objects have mass; so if an object is moving, then it has momentum - it has its mass in motion. The amount of momentum that an object has is dependent upon two variables: how much stuff is moving and how fast the stuff is moving. Momentum depends upon the variables mass and velocity.

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Acceleration describes all the changes in velocity like speeding up, slowing down, and turning. All of those create acceleration. Most things are not always at a constant speed or velocity so when the velocity changes its know as acceleration. If the velocity is constant, the acceleration is zero. Acceleration is so important because it is the result of applied forces.

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Newton's Laws are three scientific laws that Sir Issac Newton discovered. The laws tell us how objects move once they are acted upon by net forces. Newton's first law says that an object at rest or in motion stays the same unless acted upon by another force. This deals with the inertia concept. The second law says that the acceleration of an object is equal to the force you apply divided by the mass of the object. Newton's third laws states that for every force or action there is an equal and opposite reaction. Force in nature always acts in pairs.