the key principles that underpin the study of physics.

Do the entire questions:

One of the most fundamental principles of physics is the conservation of energy. This principle states that energy cannot be created or destroyed, but only transformed from one form to another. This means that the total amount of energy in a system remains constant over time. For example, when a ball is thrown into the air, it gains kinetic energy as it moves upward. As it reaches the top of its trajectory, this kinetic energy is converted into potential energy. When the ball falls back to the ground, the potential energy is converted back into kinetic energy. The total amount of energy in the system remains constant throughout this process

Another important principle of physics is the conservation of momentum. Momentum is a measure of the motion of an object and is defined as the product of an object's mass and its velocity. The conservation of momentum states that the total momentum of a closed system remains constant unless acted upon by an external force. This principle has wide-ranging applications, from the study of collisions to the behavior of particles in a magnetic field.

The principle of relativity is another key concept in physics. This principle states that the laws of physics are the same for all observers in uniform motion relative to one another. This means that there is no preferred frame of reference in the universe, and the laws of physics are the same regardless of where an observer is located. This principle has been confirmed by numerous experiments, including the famous Michelson-Morley experiment, and is a cornerstone of modern physics.

One of the most intriguing principles of physics is quantum mechanics. This branch of physics deals with the behavior of particles on the smallest scales, such as atoms and subatomic particles. According to quantum mechanics, particles can exist in multiple states at once, and their behavior is described by probabilities rather than definite outcomes. This principle has led to the development of numerous technologies, including the laser and the transistor, and has transformed our understanding of the natural world.

Finally, the principle of entropy is a fundamental concept in thermodynamics. Entropy is a measure of the disorder or randomness of a system, and the second law of thermodynamics states that the entropy of a closed system always increases over time. This means that energy is always moving from areas of higher concentration to areas of lower concentration, and that the universe as a whole is moving towards a state of maximum entropy or disorder.

In conclusion, the fundamental principles of physics provide us with a powerful framework for understanding the natural world. From the conservation of energy and momentum to the principles of relativity and quantum mechanics, these concepts have revolutionized our understanding of the universe and have led to countless technological advancements. By continuing to explore these principles, we can unlock new insights into the workings of the universe and continue to expand our knowledge of the natural world.

Motion Lab - AbstractYou will determine the horizontal distance travelled by

a horizontally launched projectile from a known height.

Objectives - After completing today's experiment, you will be able to:

• Describe in words from your experiences how the principles of projectile motion impact where a object flying through the air will land
• Relate your experiment to a USEFUL REAL WORLD APPLICATION (you can specify this in #4 below)
• Consider further analysis

Materials/Procedure/Data:Use video you recorded and measurement to gather data from your home setup - decide on the units you will use and

how you will record them.

Analysis: Use the principles of projectile motion to determine where to place your target using only the initial horizontal tabletop velocity you

calculated and the measured vertical height. Once you've done your calculation place your target accordingly, launch your projectile

(marble, gold ball, ....) and record where it lands. Calculate your % error ( you may find it will be more than 15%) between your

calculated prediction and where the projectile landed.

Conclusion:

Additional Questions to Answer (include these in the analysis section):

1. What are the key assumptions you need to make in conducting projectile motion problems?

NOTE: watch the bowling ball gun YouTube video first then answer it here is the link :

https://www.youtube.com/watch?v=CXdTKdEURCA

1. Abowling ball gunis fired horizontally at 248 m/s off a 192 m high cliff.
   1. Where does the bowling ball land?
   2. Where would a golf ball land? Why? Explain.
   3. What is the velocity at impact with the ground? Make sure to include the impact angle.

1. A baseball is thrown horizontally off the rooftop of a building - the ball strikes the ground with a velocity of 41.4 m/s [ E 54⁰down from the horizontal ].
   1. Find the height of the building.
   2. Determine where the ball landed.
   3. Was it a six-year-old child who threw the ball? Explain.

Watch thisvideo.here is the link :

https://www.youtube.com/watch?v=ui-xBeqBNi4

Think of two careers where the knowledge of projectile motion is important and explain how it is used in those areas.

NOTE for tutors :

1) dont use chatgpt other wise if I see anything I would give a bad rate and a report

An electron is moving with a speed of 67,800 km/sec at an angle 16 degrees to the external magnetic eld of strength B = 2 Tesla. Estimate the force acting on the electron in N. Charge of the electron: 1.6 - 10-19C (= 1.6E-19 C) The comparison between your input and the answer is done to 1 % accuracy. You need to use the notation 1E3 = 1000 to enter the numbers. An electron emitted by a surface made of Gold is observed with an energy of 10 eV. What was the energy of the electron in the Gold in eV'? The work function of Gold is 5.1 eV. 1. Plug the photogate closest to the launcher into Digital Input 1 on the 850 Univers at Interface; Plug the other photogate into Digital Input 2. The second photogate is located at a distance of 0.1m away from the first photogate (The program calculates the initial speed by assuming the photogates are separated by 10.0 cm and dividing by the time the ball takes to travelhetween the two gates). 2. Plug the Time of Flight Accessory into Digital Input 3. I . 3. Place the projectile launcher close to your computer screen. Make sure a distance of about .' l a meter is clear on the tabletoor in the direction the ball will be red. I' 4. Using the attached plumb bob, adjust-the angle of the launcher to 0 launched horizontally from a height above the table). 5. Make sure to align the photogates' beam hole with the call. 6- Check to see that there is no one down range! Launch - _ ling straight upward on the string. Don't jerk. Observe where the ball hits the table. Tape a small piece of tape to the table to mark the spot. Tape a sheet of blank paper at the location where the ball landed. Place the Time of Flight Accessory. 7. Click on the Record button