Lesson 15

Question 1

The Scientific Method Steps

1. Observation and Measurements- Data Input
2. Hypothesis-Educated Guess, what could happen logically
3. Experimentation- Test the Hypothesis. Should the Hypothesis be accepted, rejected, or adjusted.
4. Theory- Create a theory on how the Hypothesis stands up to testing. A theory can be used to make predictions
5. Law- If a theory can withstand testing, a Law emerges, Something that has never been observed to be violated.

Question 2

Paragraph on Scientific Method

The Scientific Method is very important in the world today. Without this Method of study, Science would not be where it is today. Most things would probably be very inaccurate and not correct. So the scientific method is used for lots of things, and probably the most important aspect of Modern Science. For an example of the Scientific Method, one of the steps is measurements. Measuring has come a long way. The Method has adopted the SI System wish and is far superior than what came before. The English system was based on arbitrary measuring styles. For example an inch was the width of a king’s thumb, and a foot was the length of a king’s foot. This is inconsistent and resulted in incorrect measurements. However the SI System is base 10 and super easy to calculate. 

Question 3

Compare and Contrast Accuracy and Precision

There are many similarities and Differences between Accuracy and Precision. Shooting a gun is an example. If there is a target and the gun is shot, most of them are close to the bullseye, this is accurate, however the rest of them are scattered, this is not precise. To be accurate and precise it would be close tight shots, with bullseyes. So a difference is Accurate is supposed to be what your shooting, where precise is where and how closely your shooting.  They are similar in the fact that they both must be in a grouping to be accurate or precise, meaning the bullet has to hit the bullseye to be accurate, and the bullets have ro be close enough to be precise. 

Question 4

25 m/s

Question 5 

Vectors vs Scalars

Vectors and Scalars are different because of one reason. A Vector has magnitude and Direction, where a scalar just has Magnitude. An example of this is a car’s velocity around a race track and its speed on a drag strip. Velocity is how fast in what direction. Speed is a scalar of just how fast it is going.  Speed is a part of velocity being how fast it is going, it just is not velocity until there is direction.

Question 6

d=1/2at^2=½ 9.81m/s^2=½ 9.81m/(2s)^2=19.6m.

Question 7

Newton’s 3rd Law of Motion.

Isaac Newton had 3 main laws of Physics.  The third however is the most important to me. The 3rd Law of motion states, “ For every action there is an equal and opposite reaction. This means for every force there is another form opposite to the original. If a Person is sitting in a chair, then the person is putting force against that chair. At the same time, the chair is also equally pushing against the person.  Newton’s 3rd Law can be written as an equation. Another example is a car crash. One car is stationary while the other one is moving, and they smash into each other. The car moving exerts force onto the car that isn’t moving. However the car not moving is putting equal force against the moving car. The equation for Newton’s 3rd Law is: F=MA

Question 8

h=10m+½ g+2

t=√2+10m/9.81ms^2=1.4278s

d=vxt=100m/s*1.4278=143m

Question 9

ON PAPER

Question 10

Body Acceleration

It can change direction, while keeping speed. For example going around a curve in a road, keeps speed, changes direction.