/*! 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} Q. 47 A firecracker in a coconut blows... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 11: Q. 47 (page 289)

A firecracker in a coconut blows the coconut into three pieces. Two pieces of equal mass fly off south and west, perpendicular to each other, at speed vo. The third piece has twice the mass as the other two. What are the speed and direction of the third piece? Give the direction as an angle east of north

Short Answer

Expert verified

The speed of the third piece is vo2at45o

Step by step solution

01

Step 1. Given information

A firecracker in a coconut blows the coconut into three pieces.

To find the speed of the third piece.

02

Step 2. Analyze and apply

We can conserve the momentum on both axis,

For x-axis:

m1v1,x+m2v2,x+m3v3,x=0m(-vo)+0+2mv3,x=0v3,x=v02

03

Step 3. Evaluating at y-axis

For y-component:

m1v1,y+m2v2,y+m3v3,y=0m(0)+m(-vo)+2mv3,y=0v3,y=vo2

The final speed, v=vx2+vy2=v02

The direction will be,tan胃=v3,yv3,x=1胃=45o

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

You are part of a search-and-rescue mission that has been called out to look for a lost explorer. You鈥檝e found the missing explorer, but, as FIGURE P11.50 shows, you鈥檙e separated from him by a 200-m-high cliff and a 30-m-wide-raging river. To save his life, you need to get a 5.0 kg package of emergency supplies across the river. Unfortunately, you can鈥檛 throw the package hard enough to make it across. Fortunately, you happen to have a 1.0 kg rocket intended for launching flares. Improvising quickly, you attach a sharpened stick to the front of the rocket so that it will impale itself into the package of supplies, then fire the rocket at ground level toward the supplies. What minimum speed must the rocket have just before impact in order to save the explorer鈥檚 life?

A 2kgobject is moving to the right with a speed of 1m/s when it experiences an impulse of 4Ns. What are the object鈥檚 speed and direction after the impulse?

A 250gball collides with a wall. FIGURE EX11.13 shows the ball鈥檚 velocity and the force exerted on the ball by the wall. What is vfx, the ball鈥檚 rebound velocity?

Angie, Brad, and Carlos are discussing a physics problem in which two identical bullets are fired with equal speeds at equalmass wood and steel blocks resting on a frictionless table. One bullet bounces off the steel block while the second becomes embedded in the wood block. 鈥淎ll the masses and speeds are the same,鈥� says Angie, 鈥渟o I think the blocks will have equal speeds after the collisions.鈥� 鈥淏ut what about momentum?鈥� asks Brad. 鈥淭he bullet hitting the wood block transfers all its momentum and energy to the block, so the wood block should end up going faster than the steel block.鈥� 鈥淚 think the bounce is an important factor,鈥� replies Carlos. 鈥淭he steel block will be faster because the bullet bounces off it and goes back the other direction.鈥� Which of these three do you agree with, and why?

The flowers of the bunchberry plant open with astonishing force and speed, causing the pollen grains to be ejected out of the flower in a mere 0.30 ms at an acceleration of 2.5脳10-4m/s2. If the acceleration is constant, what impulse is delivered to a pollen grain with a mass of 1.0脳10-7g?
See all solutions

Recommended explanations on Physics Textbooks

Quantum Physics

Read Explanation

Mechanics and Materials

Read Explanation

Nuclear Physics

Read Explanation

Physics of Motion

Read Explanation

Astrophysics

Read Explanation

Work Energy and Power

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.