Applied Physics (11th Edition)
11th Edition
ISBN: 9780134241142
Author: EWEN
Publisher: PEARSON
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Chapter 0, Problem 3RQ
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1. Galileo released two bodies of different masses from the Pisa tower to test his theory. Knowing that the height of the tower is 52 m.
A) Indicate in the image the characteristics of the movement of a body and deduce its type of movement.
B) Write the equations of motion corresponding to the movement of the body.
C) Calculate the time it takes to reach the ground.
D) How fast will they arrive? Interpret the results. 0.5p E) What speed do we carry halfway? Interpret the results.
F) With what speed should we pull up so that the body reaches the ground in 10s.
G) Selected and graphic corresponding to the previous movement. Justify your answer.
2) Force is given by mass times acceleration. If the force on a body is 20N and its mass is 12kg, how much is the acceleration?
3) As you step out of the boat, you move forward and the boat moves backwards. Which law of motion is that?
Name the law
Explain the law
Give a different example of the same law
Describe a real life scenario/s where you can apply the Principles or Concepts regarding Physics. Enumerate the concepts or principles illustrated on the said scenario.
Chapter 0 Solutions
Applied Physics (11th Edition)
Ch. 0 - Physics is a field of study that governs a. how...Ch. 0 - Who among the following is an example of a...Ch. 0 - Prob. 3RQCh. 0 - Which of the following is not considered a branch...Ch. 0 - Analyzing the braking distance of a sports car...Ch. 0 - Explain the difference between science and...Ch. 0 - Provide two examples of scientific knowledge and a...Ch. 0 - What is the difference between the scientific...Ch. 0 - Why is it important to study physics? Provide a...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Describe two major discoveries or contributions that Galileo made to science and the study of mechanics.arrow_forward(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) Scenes in films or television programs sometimes show people jumping off moving trains and having unpleasant encounters with the ground. If someone is on a moving flatbed train car and wishes to jump off, how could the person use the concept of relative speed to make a safer dismount?arrow_forwardName a key invention that Newton contributed to optics that astronomers continue to exploit today.arrow_forward
- A spacecraft lands on a newly discovered planet orbiting the star 51 Pegasi. To measure the acceleration from gravity on the planet, an astronaut drops a rock from a height of 2 m. A precision timer indicates that it takes the rock 0.71 s to fall to the surface. What is the acceleration from gravity on this planet?arrow_forwardIn a laboratory frame of reference, an observer notes that Newtons second law is valid. Assume forces and masses are measured to be the same in any reference frame for speeds small compared with the speed of light. (a) Show that Newtons second law is also valid for an observer moving at a constant speed, small compared with the speed of light, relative to the laboratory frame. (b) Show that Newtons second law is not valid in a reference frame moving past the laboratory frame with a constant acceleration.arrow_forwardAccording to the National Academy of Sciences, the Earths surface temperature has risen about 1F since 1900. There is evidence that this climate change may be due to human activity. The organizers of World Jump Day argue that if the Earth were in a slightly larger orbit, we could avoid global warming and climate change. They propose that we move the Earth into this new orbit by jumping. The idea is to get people in a particular time zone to jump together. The hope is to have 600 million people jump in a 24-hour period. Lets see if it will work. Consider the Earth and its inhabitants to make up the system. a. Estimate the number of people in your time zone. Assume they all decide to jump at the same time; estimate the total mass of the jumpers. b. What is the net external force on the Earthjumpers system? c. Assume the jumpers use high-tech Flybar pogo sticks (Fig. P8.32), which allow them to jump 6 ft. What is the displacement of the Earth as a result of their jump? d. What happens to the Earth when the jumpers land?arrow_forward
- (Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . A basketball player shoots a Free throw. Make a sketch showing the basketball's velocity just after the ball leaves the player's hands. Draw in two components of this velocity, one horizontal and one vertical. Repeat the sketch for the instant just before the ball reaches the basket. What is different?arrow_forwardtop 10 physics law that actually apply in real life i should remember to avoid dangers and casualtiesarrow_forward3. Galileo devoted himself to tearing down Aristotle’s physics. It is interesting then to note that, in some ways, Galileo was still Aristotelian. explain.arrow_forward
- Lightning Mcqueen moves from rest and accelerates for 9 seconds. Its velocity after 5 seconds is 15 m/s. What is Lightning Mcqueen's acceleration in meters per square seconds? What is the car's velocity after acceleration? How far did the car travel during its acceleration?arrow_forwardNASA has fired a rocket straight up into the air from ground level with an unknown initial velocity. It reaches a maximum height of 164,000 feet. This happened in Cape Canaveral therefore the rocket is under the acceleration of Earth's gavity in which we all know is -32 ft/sec/sec. Please round your answers to two decimal places. a). Find the time it takes for the rocket to reach maximum height. b). find the initial velocity necessary to reach that height.arrow_forwardSarah traveled 90 km at a certain speed. In going back, she increased her speed by 10 km/hr. If it took her a total of 10/3 hours, what was her original speed? Explain also. Create an expression to: Sarah traveled 90 km at a certain speed. Create another expression to: In going back, she increased her speed by 10 km/hr. Formula: v = d/tarrow_forward
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