/*! 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} Q29P Suppose a gangster sprays Superm... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 9: Q29P (page 249)

Suppose a gangster sprays Superman鈥檚 chest with3 gbullets at the rate of 100 bullets/min, and the speed of each bullet is 500 m/s. Suppose too that the bullets rebound straight back with no change in speed. What is the magnitude of the average force on Superman鈥檚 chest?

Short Answer

Expert verified

The magnitude of the average force on Superman鈥檚 chest is Favg=5.0N

Step by step solution

01

Understanding the given information

The mass of each bullet,m=3g1kg1000g=3脳10-3kg

The speed of a bullet is,v=500m/s

The rate of bombarding bullets is, 100 bullets/min .

02

Concept and formula used in the given question

We can use the equation of impulse-momentum theorem to calculate the impulse and then we can use this value of impulse in the equation of average force to calculate its value.

J=鈭�P鈭�P=m脳v2-v1J=Favg脳t

03

Calculation for the magnitude of the average force on Superman’s chest

Suppose, the time of bombardingthebullet is 1 min. So, the total number of bullets shot at is 100.

The equation of the impulse-momentum theorem is,

J=鈭�PJ=100脳m脳v2-v1J=100脳3脳10-3kg脳500m/s--500m/sJ=300N路s

Now,

Favg=J鈭�t=300N路s60s=5.0N

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

Block 1 with mass m1 slides along an x-axis across a frictionless floor and then undergoes an elastic collision with a stationary block 2 with massFigure 9-33 shows a plot of position xversus time tof block 1 until the collision occurs at positionxcand time tc. In which of the lettered regions on the graph will the plot be continued (after the collision) if (a)m1<m2and (b)m1>m2(c) Along which of the numbered dashed lines will the plot be continued ifm1=m2?

Two skaters, one with mass65kgand the other with mass 40kg, stand on an ice rink holding a pole of length 10mand negligible mass. Starting from the ends of the pole, the skaters pull themselves along the pole until they meet. How far does the 40kgskater move?

A2100 KGtruck travelling north at 41 km/h turns east and accelerates to 51 km/h. (a) What is the change in the truck鈥檚 kinetic energy? What are the (b) Magnitude and (c) Direction of the change in its momentum?

Particle A and particle B are held together with a compressed spring between them. When they are released, the spring pushes them apart, and they then fly off in opposite directions, free of the spring. The mass of A is 2.00 times the mass of B, and the energy stored in the spring was 60 J. Assume that the spring has negligible mass and that all its stored energy is transferred to the particles. Once that transfer is complete, what are the kinetic energies of (a) particle A and (b) particle B?

Ricardo, of mass 80 kg , and Carmelita, who is lighter, is enjoying Lake Merced at dusk in a30 kgcanoe. When the canoe is at rest in the placid water, they exchange seats, which are 3.0 mapart and symmetrically located with respect to the canoe鈥檚 center. If the canoe moves 40 cmhorizontally relative to a pier post, what is Carmelita鈥檚 mass?
See all solutions

Recommended explanations on Physics Textbooks

Electrostatics

Read Explanation

Thermodynamics

Read Explanation

Electromagnetism

Read Explanation

Particle Model of Matter

Read Explanation

Geometrical and Physical Optics

Read Explanation

Electricity and Magnetism

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.