Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 3.2, Problem 2cT
How does the direction of the net force on the ball in motion 2 compare to the direction of the net force on the ball in motion 1? Explain.
Is the direction of the acceleration of the ball in motion 2 consistent with the fact that the ball speeds up and its trajectory curves? Explain.
Expert Solution & Answer
Learn your wayIncludes step-by-step video
schedule04:00
Students have asked these similar questions
A rocket is launched at an angle of 53° above the horizontal with an initial speed of 75 m/s, as shown below. It moves for 25 s along its initial line of motion with an acceleration of 25 m/s². At this time, its engines fail, and the rocket proceeds to move as a free body.
a. What is the rocket's maximum altitude?
b. What is the rocket's total time of flight?
c. What is the rocket's horizontal range?
A 20-kg boy slides down a playground slide with a constant acceleration a = 1.1 m/s2 parallel to the surface of the slide. The boy starts sliding with an initial speed of v0=0. Refer to the figure.
a) write an expression for the child's speed squared, vf2, at the bottom of the slide in terms of a, v0, and the length of the slide, d.
b If the slide is 4.0 m long and the boy's final speed is vf=f = 5.0 m/s, what is his initial speed, in meters per second?
c) When starting from rest, how long, in seconds, does it take the boy to reach the bottom of the slide?
A 400 gram rock is thrown vertically upwards from the surface of Earth. When it is 14 m above the ground, it is traveling upwards at 24 m/s.
3) Determine the rock's initial speed right after it was thrown?
4) Evaluate your solution. Explain why the magnitude of your answer reasonable? How do you know what the sign of your answer should be? In what way is your answer consistent with your representations? Please be as detailed as possible
Chapter 3 Solutions
Tutorials in Introductory Physics
Ch. 3.1 - A block is moving to the left on a frictionless,...Ch. 3.1 - In a separate experiment, two hands push...Ch. 3.1 - Shown at right is a side-view diagram of the...Ch. 3.1 - Recall the motion of the block in part B. For each...Ch. 3.1 - Generalize from your answers to pans A—D to...Ch. 3.1 - A glider, glider A, Is pulled by a suing across a...Ch. 3.1 - The diagrams at right show two identical gliders...Ch. 3.1 - A block on a frictionless table is connected to a...Ch. 3.2 - Three students discuss the final momentum and...Ch. 3.2 - Which cart takes longer to travel between the two...
Ch. 3.2 - Use Newton's second law and the definition of...Ch. 3.2 - How does the net work done on cart A(Wnet,A)...Ch. 3.2 - Refer again to the discussion among the three...Ch. 3.2 - Release the ball so that it rolls straight toward...Ch. 3.2 - Release the ball at an angle to the ramp as shown...Ch. 3.2 - How does the direction of the net force on the...Ch. 3.2 - How does the change in kinetic energy of the ball...Ch. 3.2 - For motion 1, draw vector in region II of the...Ch. 3.2 - For motion 2, draw vectors in region II of the...Ch. 3.2 - Consider the change in momentum vectors you...Ch. 3.3 - What differences between gliders M and N could...Ch. 3.3 - For experiment 1,draw and label separate free-body...Ch. 3.3 - In the spaces provided, draw and label vectors to...Ch. 3.3 - A student compares the final speeds of gliders M...Ch. 3.3 - A. Suppose that glider D is free to move and...Ch. 3.3 - A second experiment is performed in which glider D...Ch. 3.3 - Consider the two experiments described above. When...Ch. 3.3 - When the momentum of an object or system of...Ch. 3.3 - Two students the second experiment, in which...Ch. 3.4 - Draw separate free-body diagrams for each block...Ch. 3.4 - Rank the magnitudes of all the horizontal forces...Ch. 3.4 - The velocity vectors for blocks A and B are shown...Ch. 3.4 - Use your knowledge of the velocities and changes...Ch. 3.4 - Draw and label a free-body diagram for system C at...Ch. 3.4 - Write an equation for the momentum of system C in...Ch. 3.4 - Generalize from your results to answer the...Ch. 3.4 - Imagine a single object whose mass is equal to the...Ch. 3.4 - What are the external forces exerted on system C...Ch. 3.4 - The momentum vectors of each block before the...Ch. 3.4 - Draw arrows that represent the direction of the...
Additional Science Textbook Solutions
Find more solutions based on key concepts
31. (I) A novice skier starting from rest, slides down an icy frictionless 8.0° incline whose vertical height i...
Physics: Principles with Applications
The speed of the person sitting on the chair relative to the chair and relative to Earth.
Conceptual Physics (12th Edition)
(II) A helicopter rotor blade can be considered a long thin rod, as shown in big. 10–55. (a) If each of the thr...
Physics for Scientists and Engineers with Modern Physics
4.3 BIO Jaw Injury. Due to a jaw injury, a patient must wear a strap (Fig. E4.3) that produces a net upward for...
University Physics with Modern Physics (14th Edition)
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective
Find an expression for the voltage across the capacitor in Example 25.6 when its fully charged.
Essential University Physics (3rd Edition)
Knowledge Booster
Learn more about
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
- Draw a picture of a cart rolling up a ramp. Draw arrows above the cart to show the direction of the velocity and the direction of the acceleration. Choose a coordinate system and include this in your picture. Draw a new picture of a cart rolling down a ramp. Draw arrows above the cart to show the direction of the velocity and the direction of the acceleration. Label your coordinate system. Sketch a graph of the instantaneous acceleration vs. time for the entire motion of the cart as it rolls up and then back down the track after an initial push. Label the instant where the cart reverses its motion near the top of the track. Explain your reasoning. Write down the equation(s) that best represents this graph. If there are constants in your equation, what kinematic quantities do they represent? How would you determine these constants from your graph?arrow_forwardScenario: A landing party on the Moon discovers that the acceleration due to lunar gravity is g=1.6 ms2. An object is projected on the surface of the Moon in such a way as to provide an initial vertical component of velocity of 24 m/s, and a horizontal component of 32 m/s. *Reminder that a projectile is an object moving freely under the influence of gravity alone. Procedure: Answer the following questions using your knowledge of projectile motion. a. What is the initial velocity, vo, of the object? b. How long will the object remain in flight? (assume surface is flat) c. How high will the object go? d. How far will the object travel?arrow_forwardA swimmer heading directly across a river that is 200 m wide reaches the opposite bank in 7 minutes. During the swim she is swept downstream 450 meters. A. Draw a useful picture depicting this situation. B. How fast is the river flowing? C. How fast can she swim in still water? D. What is her velocity (magnitude and direction) according to an observer on the shore?arrow_forward
- Two cars start at the same time and travel in the same direction along a straight road. The figure below gives the velocity, v, of each car as a function of time, t. v (km/hr) Car A Car B t (hr) (a) Which car attains the larger maximum velocity, and how do you know? O A, because the area under its velocity curve is smaller. O A, because the peak of its velocity curve is higher. A, because its velocity curve hits zero first. O B, because the area under its velocity curve is larger. O B, because the peak of its velocity curve is lower. O B, because its velocity curve hits zero second. (b) Which car stops first, and how do you know? O A, because the area under its velocity curve is smaller. O A, because the peak of its velocity curve is higher. O A, because its velocity curve hits zero first. O B, because the area under its velocity curve is larger. B, because the peak of its velocity curve is lower. O B, because its velocity curve hits zero second. (c) Which car travels farther, and how…arrow_forwardAstronauts on a distant planet throw a rock straight upward and record its motion with a video camera. After digitizing their video, they are able to produce the graph of height, y, versus time, t, shown in the figure. (Figure 1) Part A What is the acceleration of gravity on this planet? ? a = m/s? Submit Request Answer Part B What was the initial speed of the rock? να ΑΣφ. v = m/s Submit Request Answer Figure Provide Feedback у (m) 30 25 20 15 10 5 -t (s) 8. 1 2 3 4. 6.arrow_forwardProf KAUR claims that Diagram D (below) could depict an object moving to the left at constant speed. Is the professor correct or incorrect? Briefly explain why they are correct or incorrect. 10 N A 15 N 15 N 15 N 35 N B 25 N 25 N 20 N 25 N 25 N C 10 N 25 N 25 N D Hint: In your answer, make sure that the explanation is related to a physics principle covered in this unit.arrow_forward
- In the Soap Box Derby, kids build non-motorized cars with very low-friction wheels. They race by rolling down a hill. The track at Akron's Derby Downs begins with a 14-meter section tilted 15 degrees below the horizontal. A. Draw a useful pictorial representation for this problem. Clearly indicate the angle above, and a useful coordinate system. B. What is the acceleration of a car rolling down this hill (ignore friction)? C. If a car starts from rest at the top of the section so that will be its speed at the bottom of this section of the track?arrow_forwardDynamics of rigid bodies. Show the complete and step by step solution. Limit the answer into 2 decimal points.arrow_forwardFigure below shows the data from a bathroom scale as a woman jumps straight up and then lands. Match the answers with questions. Use g = 10 m/s². Still Push-off Landing Still F (N) In air 1500 - 1000- 500 I (s) 0.25 s v What is the acceleration of the jumper during the still phase? A. 10 m/s? v What is the acceleration of the jumper during the push-off phase? B. 5 m/s? v What is the acceleration of the jumper during the in-air phase? C. 5 m/s? v What is the acceleration of the jumper during the landing phase? D. 0 E. 20 m/s? F. -10 m/s? G. -20 m/s2 H. none of the givenarrow_forward
- Buzz Lightyear is standing on top of a building on the planet Zook. He wishes to determine the height of the building, so he drops a stone off the building and it falls for 2 seconds. Buzz knows that gravitational acceleration on Zook is 5 (m/s)/s. a) EXPLAIN how you would use the How fast method to determine the speed of the stone when it reaches the ground as well as the average speed of the stone during this time. Give the speed and average speed of the stone. b) EXPLAIN how you would use the How-far method to determine height of the building. Give the height of the building. Maximum number of characters (including HTML tags added by text editor): 32,000 Taxr Ediser(aad characrer count)arrow_forwardP5 The gravitational attraction on Moon 1 of Jupiter is 10/sec². An object is launched 45 ft above the surface of Moon 1 with a velocity of 40%/sec upward. a. Find the equation of motion of this object. b. Find the maximum height above the surface of Moon 1 reached by this object. c. Find the time for this object to reach the surface of Moon 1.arrow_forwardPlease answer only questions 1, and 2.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Momentum | Forces & Motion | Physics | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=DxKelGugDa8;License: Standard YouTube License, CC-BY