College Physics
7th Edition
ISBN: 9780321601834
Author: Jerry D. Wilson, Anthony J. Buffa, Bo Lou
Publisher: Addison-Wesley
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Chapter 2, Problem 17CQ
To determine
The acceleration of an object when the instantaneous velocity is zero.
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Students have asked these similar questions
6. A car drives at steady speed around a perfectly
circular track.
(a) The car's acceleration is zero.
(b) The net force on the car is zero.
(c) Both the acceleration and net force on the car
point outward.
(d) Both the acceleration and net force on the car
point inward.
(e) If there is no friction, the acceleration is
outward.
9. A spring has a force constant of 100 N/m and an
unstretched length of 0.07 m. One end is attached to
a post that is free to rotate in the center of a smooth.
table, as shown in the top view in the figure below.
The other end is attached to a 1kg disc moving in
uniform circular motion on the table, which
stretches the spring by 0.03 m. Friction is negligible.
What is the centripetal force on the disc?
Top View
(a)
0.3 N
(b)
3.0 N
(c)
10 N
(d)
300 N
(e)
1000 N
4. A child has a ball on the end of a cord, and whirls
the ball in a vertical circle. Assuming the speed of
the ball is constant (an approximation), when would
the tension in the cord be greatest?
(a) At the top of the circle.
(b) At the bottom of the circle.
(c) A little after the bottom of the circle when the
ball is climbing.
(d) A little before the bottom of the circle when the
ball is descending quickly.
(e) Nowhere; the cord is pulled the same amount at
all points.
Chapter 2 Solutions
College Physics
Ch. 2 - Prob. 1MCQCh. 2 - Prob. 2MCQCh. 2 - Prob. 3MCQCh. 2 - Prob. 4MCQCh. 2 - Distance is to displacement as (a) centimeters is...Ch. 2 - Prob. 6MCQCh. 2 - Prob. 7MCQCh. 2 - A negative acceleration can cause (a) an increase...Ch. 2 - Prob. 9MCQCh. 2 - Prob. 10MCQ
Ch. 2 - Prob. 11MCQCh. 2 - A car accelerates from 80 km/h to 90 km/h, while a...Ch. 2 - Prob. 13MCQCh. 2 - For a constant linear acceleration, the...Ch. 2 - Prob. 15MCQCh. 2 - An object is thrown vertically upward. Which of...Ch. 2 - Prob. 17MCQCh. 2 - Prob. 18MCQCh. 2 - Prob. 19MCQCh. 2 - Prob. 20MCQCh. 2 - Prob. 1CQCh. 2 - Prob. 2CQCh. 2 - Prob. 3CQCh. 2 - Prob. 4CQCh. 2 - Prob. 5CQCh. 2 - Prob. 6CQCh. 2 - Prob. 7CQCh. 2 - Prob. 8CQCh. 2 - Prob. 9CQCh. 2 - Prob. 10CQCh. 2 - Car A is in a straight-line distance d from a...Ch. 2 - Prob. 12CQCh. 2 - Prob. 13CQCh. 2 - How many variables must be known to solve a...Ch. 2 - Prob. 15CQCh. 2 - Prob. 16CQCh. 2 - Prob. 17CQCh. 2 - Prob. 18CQCh. 2 - Prob. 19CQCh. 2 - Prob. 20CQCh. 2 - What is the magnitude of the displacement of a car...Ch. 2 - Prob. 2ECh. 2 - Prob. 3ECh. 2 - Prob. 4ECh. 2 - Prob. 5ECh. 2 - Prob. 6ECh. 2 - Prob. 7ECh. 2 - Prob. 8ECh. 2 - The interstate distance between two cities is 150...Ch. 2 - A race car travels a complete lap on a circular...Ch. 2 -
A student runs 30 m east, 40 m north, and 50 m...Ch. 2 - A student throws a ball vertically upward such...Ch. 2 - An insect crawls along the edge of a rectangular...Ch. 2 - A plot of position versus time is shown in Fig....Ch. 2 - A high school kicker makes a 30.0-yd field goal...Ch. 2 - Prob. 17ECh. 2 - Prob. 18ECh. 2 - Short hair grows at a rate of about 2.0 cm/month....Ch. 2 - A student driving home for the holidays starts at...Ch. 2 - Prob. 21ECh. 2 - Prob. 22ECh. 2 - An automobile traveling at 15.0 km/h along a...Ch. 2 - Prob. 24ECh. 2 - Prob. 25ECh. 2 - Prob. 26ECh. 2 - Prob. 27ECh. 2 - During liftoff, a hot-air balloon accelerates...Ch. 2 - A new-car owner wants to show a friend how fast...Ch. 2 - After landing, a jetliner on a straight runway...Ch. 2 - A train on a straight, level track has an initial...Ch. 2 - A hockey puck sliding along the ice to the left...Ch. 2 - What is the acceleration for each graph segment in...Ch. 2 - Figure 2.24 shows a plot of velocity versus time...Ch. 2 - Prob. 35ECh. 2 - A train normally travels at a uniform speed of 72...Ch. 2 - Prob. 37ECh. 2 - A car accelerates from rest at a constant rate of...Ch. 2 - A car traveling at 25 mi/h is to stop on a...Ch. 2 - A motorboat traveling on a straight course slows...Ch. 2 -
The driver of a pickup truck going 100 km/h...Ch. 2 - A roller coaster car traveling at a constant speed...Ch. 2 - A rocket car is traveling at a constant speed of...Ch. 2 - Two identical cars capable of accelerating at 3.00...Ch. 2 - According to Newton’s laws of motion (which will...Ch. 2 - An object moves in the +x-direction at a speed of...Ch. 2 - A rifle bullet with a muzzle speed of 330 m/s is...Ch. 2 - The speed limit in a school zone is 40 km/h (about...Ch. 2 - Assuming a reaction time of 0.50 s for the driver...Ch. 2 - Prob. 50ECh. 2 - Prob. 51ECh. 2 - An object initially at rest experiences an...Ch. 2 - Prob. 53ECh. 2 - An object initially at rest experiences an...Ch. 2 - Prob. 55ECh. 2 - Prob. 56ECh. 2 - A car accelerates horizontally from rest on a...Ch. 2 - An automobile is traveling on a long, straight...Ch. 2 - A student drops a ball from the top of a tall...Ch. 2 - Prob. 60ECh. 2 - Prob. 61ECh. 2 - You can perform a popular trick by dropping a...Ch. 2 - Prob. 63ECh. 2 - A boy throws a stone straight upward with an...Ch. 2 - In Exercise 64, what would be the maximum height...Ch. 2 -
The Petronas Twin Towers in Malaysia and the...Ch. 2 - In an air bag test, a car traveling at 100 km/h is...Ch. 2 -
You throw a stone vertically upward with an...Ch. 2 - A Super Ball is dropped from a height of 4.00 m....Ch. 2 - In Fig. 2.25, a student at a window on the second...Ch. 2 -
A photographer in a helicopter ascending...Ch. 2 - The acceleration due to gravity on the Moon is...Ch. 2 - It takes 0.210 s for a dropped object to pass a...Ch. 2 - Prob. 74ECh. 2 - Prob. 75ECh. 2 - Prob. 76ECh. 2 - A car and a motorcycle start from rest at the same...Ch. 2 - Prob. 78ECh. 2 - Prob. 79ECh. 2 - Prob. 80ECh. 2 - Prob. 81ECh. 2 - Prob. 82ECh. 2 - Prob. 83ECh. 2 - Prob. 84ECh. 2 - Prob. 85ECh. 2 - Prob. 86ECh. 2 - Prob. 87ECh. 2 - A Superball is dropped from a height of 2.5 m and...
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- 3. In a rotating vertical cylinder (Rotor-ride) a rider finds herself pressed with her back to the rotating wall. Which is the correct free-body diagram for her? (a) (b) (c) (d) (e)arrow_forward8. A roller coaster rounds the bottom of a circular loop at a nearly constant speed. At this point the net force on the coaster cart is (a) zero. (b) directed upward. (c) directed downward. (d) Cannot tell without knowing the exact speed.arrow_forward5. While driving fast around a sharp right turn, you find yourself pressing against the left car door. What is happening? (a) Centrifugal force is pushing you into the door. (b) The door is exerting a rightward force on you. (c) Both of the above. (d) Neither of the above.arrow_forward
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