A projectile is fired at an angle of 55.0° above the horizontal with an initial speed of 35.0 m/s. 17. What is the magnitude of the horizontal component of the projectile's displacement at the end of 2 s? Ans: 40 m 18. How long does it take the projectile to reach the highest point in its trajectory? Ans: 2.9 s Use the following to answer questions 19-21. A shell is fired with a horizontal velocity in the positive x direction from the top of an 80-m high cliff. The shell strikes the ground 1330 m from the base of the cliff. The drawing is not to scale. 80 m - 1330 m 19. Determine the initial speed of the shell.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
icon
Related questions
icon
Concept explainers
Topic Video
Question

could you walk me through each problem and explain to me how we got to the answer 

i would be really greatful if u did your writing explanation on paper:)

A projectile is fired at an angle of 55.0° above the horizontal with an initial speed of 35.0 m/s.
17. What is the magnitude of the horizontal component of the projectile's displacement at the end of 2 s?
Ans: 40 m
18. How long does it take the projectile to reach the highest point in its trajectory?
Ans: 2.9 s
Use the following to answer questions 19-21.
A shell is fired with a horizontal velocity in the positive x direction from the top of an 80-m high cliff.
The shell strikes the ground 1330 m from the base of the cliff. The drawing is not to scale.
80 m
19. Determine the initial speed of the shell.
Ans: 330 m/s
1330 m
20. What is the magnitude of the velocity of the shell as it hits the ground?
Ans: 330 m/s
21. What is the magnitude of the acceleration of the shell just before it strikes the ground?
Ans: 9.8 m/s²
Use the following to answer questions 22-24.
A football is kicked with a speed of 18 m/s at an angle of 65° to the horizontal.
22. What are the respective horizontal and vertical components of the initial velocity of the football?
Ans: 7.6 m/s, 16 m/s
23. How long is the football in the air? Neglect air resistance.
Ans: 3.3 s
24. How far does the football travel horizontally before it hits the ground?
Ans: 25
Transcribed Image Text:A projectile is fired at an angle of 55.0° above the horizontal with an initial speed of 35.0 m/s. 17. What is the magnitude of the horizontal component of the projectile's displacement at the end of 2 s? Ans: 40 m 18. How long does it take the projectile to reach the highest point in its trajectory? Ans: 2.9 s Use the following to answer questions 19-21. A shell is fired with a horizontal velocity in the positive x direction from the top of an 80-m high cliff. The shell strikes the ground 1330 m from the base of the cliff. The drawing is not to scale. 80 m 19. Determine the initial speed of the shell. Ans: 330 m/s 1330 m 20. What is the magnitude of the velocity of the shell as it hits the ground? Ans: 330 m/s 21. What is the magnitude of the acceleration of the shell just before it strikes the ground? Ans: 9.8 m/s² Use the following to answer questions 22-24. A football is kicked with a speed of 18 m/s at an angle of 65° to the horizontal. 22. What are the respective horizontal and vertical components of the initial velocity of the football? Ans: 7.6 m/s, 16 m/s 23. How long is the football in the air? Neglect air resistance. Ans: 3.3 s 24. How far does the football travel horizontally before it hits the ground? Ans: 25
Use the following to answer questions 25-26.
A rock is kicked horizontally at a speed of 15 m/s from the edge of a cliff. The rock strikes the ground 65 m
from the foot of the cliff of height H as suggested in the figure, which is not drawn to scale. Neglect air
resistance.
H
16 m/s
65 m-
25. How long is the rock in the air?
Ans: 4.0 s
26. What is the approximate value of H, the height of the cliff?
Ans: 78 m
Use the following to answer questions 27-29.
A projectile is fired horizontally with an initial speed of 50.0 m/s. Neglect air resistance.
27. What is the magnitude of the displacement of the projectile 3.00 s after it is fired?
Ans: 156 m
28. What is the speed of the projectile 3.00 s after it is fired?
Ans: 58.0 m/s
29. What is the magnitude of the acceleration of the projectile 3.00 s after it is fired?
Ans: 9.8 m/s²
Transcribed Image Text:Use the following to answer questions 25-26. A rock is kicked horizontally at a speed of 15 m/s from the edge of a cliff. The rock strikes the ground 65 m from the foot of the cliff of height H as suggested in the figure, which is not drawn to scale. Neglect air resistance. H 16 m/s 65 m- 25. How long is the rock in the air? Ans: 4.0 s 26. What is the approximate value of H, the height of the cliff? Ans: 78 m Use the following to answer questions 27-29. A projectile is fired horizontally with an initial speed of 50.0 m/s. Neglect air resistance. 27. What is the magnitude of the displacement of the projectile 3.00 s after it is fired? Ans: 156 m 28. What is the speed of the projectile 3.00 s after it is fired? Ans: 58.0 m/s 29. What is the magnitude of the acceleration of the projectile 3.00 s after it is fired? Ans: 9.8 m/s²
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Projectile motion
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.
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON