Principles of Physics: A Calculus-Based Text

5th Edition

ISBN: 9781133104261

Author: Raymond A. Serway, John W. Jewett

Publisher: Cengage Learning

*expand_more*

*expand_more*

*format_list_bulleted*

#### Concept explainers

Question

A hot-air balloon is rising upward with a constant speed of 2.14 m/s. When the balloon is 2.98 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground?

Expert Solution

Trending nowThis is a popular solution!

Step by stepSolved in 3 steps with 2 images

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

A rescue helicopter is hovering over a person whose sailboat has capsized. One of the rescuers tosses a life preserver straight down to the person with an initial speed of 1.25 m/s and observes that it takes 1.75 s to reach the water. How high above the water was the preserver released? Note that the downdraft of the helicopter reduces the effect of air resistance on the falling life preserver, so that an acceleration equal to that due to gravity is reasonable.

*arrow_forward*

A spring gun that is mounted at the edge of a 2.0-m-high table launches a steel ball at an angle of 230 above the horizontal with an initial speed of 7.0 m/s. What is the total time of flight of the steel ball? (Assume that g = 9.81 m/s2.)
a.
0.80 s
b.
0.60 s
c.
0.40 s
d.
1.0 s
e.
1.2 s

*arrow_forward*

A projectile is launched in the air from the ground with initial velocity ?0=66 m/s.�0=66 m/s. What is the maximum height the projectile reaches

*arrow_forward*

On the earth, an astronaut throws a ball straight upward; it stays in the air for a total time of 3.0 s before reaching the ground again. If a ball were to be thrown upward with the same initial speed on the moon, how much time would pass before it hit the ground?A. 7.3 s B. 18 s C. 44 s D. 108 s

*arrow_forward*

A man stands on the roof of a 15.0 m tall building and throws a rock with a velocity of magnitude 30.0 m/s at an angle of 30° above the horizontal. Ignoring air resistance, how long will it take for the rock to reach the ground?
a. 2.0 s
b. 0.79 s
c. 3.86 s
d. 0.5 s

*arrow_forward*

A ball is launched from ground level with an initial upwards velocity of 20 m/s and an initial horizontal velocity of 30 m/s. How far from its starting position does the ball land assuming the ground is level?
E) 180 m
D)150 m
A) 30 m
B) 60 m
C) 120 m

*arrow_forward*

A certain freely falling object, released from the rest, requires 2.5 s to travel the last 40 m before it hits the ground. What is the magnitude of the velocity of the object when it is 40 m above the ground.
3.3 m/s
3.5 m/s downward
3.8 m/s
4.2 m/s

*arrow_forward*

An object is thrown in horizontal with an initial velocity v0= 10 m/s from the roof of a building 20 m tall. How far from the building does it hit the ground?
C. 15 m
E. No answer
A. 5 m
D. 20 m
B. 10 m

*arrow_forward*

A fish swimming in a horizontal plane has velocity i = (4.00 î + 1.00 ĵ) m/s at a point in the ocean where the position relative to a certain rock is i = (16.0 î − 3.20 ĵ) m. After the fish swims with constant acceleration for 15.0 s, its velocity is = (21.0 î − 6.00 ĵ) m/s.
In what direction is it moving? ______________? ° counterclockwise from the +x-axis

*arrow_forward*

A ball is thrown with an initial speed of 20 m/s at an angle of 60° to the ground. If air resistance is negligible, what is the ball’s speed at the instant it reaches its maximum height from the ground?
a
Zero
b
20 m/s
c
10 m/s
d
17 m/s
e
14 m/s

*arrow_forward*

A group of students celebrate their first year of medical school with a hot-air balloon ride, which is rising upward with a constant speed of 3.0 m/s. When the balloon is 3.50 m above the ground, one of the students who is taking a selfie with the other students accidentally drops her smart phone over the side of the balloon (fortunately with a OtterBox case). With what speed would the phone hit the ground in m/s? Note that the displacement of the phone dropping 3.50 m would be - 3.50 m.
For the same situation as Question 9, how long in seconds would the smart phone be in the air before it hits the ground?

*arrow_forward*

A fish swimming in a horizontal plane has velocity i = (4.00 î + 1.00 ĵ) m/s at a point in the ocean where the position relative to a certain rock is i = (12.0 î − 3.60 ĵ) m. After the fish swims with constant acceleration for 17.0 s, its velocity is = (19.0 î − 6.00 ĵ) m/s.

*arrow_forward*

*arrow_back_ios*

- SEE MORE QUESTIONS

*arrow_forward_ios*

Recommended textbooks for you

Principles of Physics: A Calculus-Based Text

Physics

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Cengage Learning

Physics for Scientists and Engineers, Technology ...

Physics

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Cengage Learning

Principles of Physics: A Calculus-Based Text

Physics

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Cengage Learning

Physics for Scientists and Engineers, Technology ...

Physics

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Cengage Learning