/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q72P An entertainer juggles balls whi... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: Q72P (page 63)

An entertainer juggles balls while doing other activities. In one act, she throws a ball vertically upward, and while it is in the air, she runs to and from a table 5.50 m away at an average speed of 3.00 m/s, returning just in time to catch the falling ball. (a) With what minimum initial speed must she throw the ball upward to accomplish this feat? (b) How high above its initial position is the ball just as she reaches the table?

Short Answer

Expert verified

(a) Minimum initial speed is 17.96 m/s.

(b) Initial position is 16.44 m.

Step by step solution

01

identification of given data

Average speed v=3.00m/s

Distance d=5.50m

02

Calculation of speed

As we know that

t=dvt=5.5脳23t=3.67sAlsov0t=12gt2v0=12脳9.8脳3.67v0=17.96m/s

03

Calculation of position

t=dvt=5.53t=1.83sAsweknowthaty=v0t-12gt2y=(17.96脳1.83)-12脳9.8脳1.832y=16.44m

It is 16.44 m high above its initial position when ball just as she reaches the table

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A rubber hose is attached to a funnel, and the free end is bent around to point upward. When water is poured into the funnel, it rises in the hose to the same level as in the funnel, even though the funnel has a lot more water in it than the hose does. Why? What supports the extra weight of the water in the funnel?

If A鈫�andB鈫�are nonzero vectors, is it possible for both A鈫�路B鈫�andA鈫�脳B鈫�to bezero? Explain.

A Tennis Serve. In the fastest measured tennis serve, the ball left the racquet at 73.14m/s. A served tennis ball is typically in contact with the racquet for30.0and starts from rest. Assume constant acceleration. (a) What was the ball鈥檚 acceleration during this serve? (b) How far did the ball travel during the serve?

Starting from a pillar, you run 200 m east (the +x-direction) at an average speed of 5.0 m/s and then run 280 m west at an average speed of 4.0 m/s to a post. Calculate (a) your average speed from pillar to post and (b) youraverage velocity from pillar to post.

Given two vectors A鈫�=4.00i^+7.00j^ and B鈫�=5.00i^鈭�7.00j^, (a) find the magnitude of each vector; (b) use unit vectors to write an expression for the vector difference A鈫�鈭�B鈫�; and (c) find the magnitude and direction of the vector difference A鈫�鈭�B鈫�. (d) In a vector diagram showA鈫�,B鈫� and A鈫�鈭�B鈫�, and show that your diagram agrees qualitatively with your answer to part (c).
See all solutions

Recommended explanations on Physics Textbooks

Torque and Rotational Motion

Read Explanation

Magnetism

Read Explanation

Space Physics

Read Explanation

Geometrical and Physical Optics

Read Explanation

Circular Motion and Gravitation

Read Explanation

Astrophysics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.