/*! 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. 10 A sprinter accelerates from rest... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 9: Q. 10 (page 227)

A sprinter accelerates from rest. Is the work done on the sprinter positive, negative, or zero? Explain

Short Answer

Expert verified

Work done on sprinter is negative.

Step by step solution

01

Given information

A sprinter accelerates from rest.

02

Explanation

When sprinter accelerates, the work done on sprinters is due to normal reaction on sprinter.

As the sprinter takes off from ground, work done is calculated by the frictional force acting on when sprinter takes off foot from ground.

So ,the normal reaction on the sprinter is negative giving negative work done on the sprinter.

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 20 g particle is moving to the left at 30 m/s. A force on the particle causes it to move the the right at 30 m/s. How much work is done by the force?

Evaluate the dot product of the three pairs of vectors in Figure

Astronomers using a 2.0-m-diameter telescope observe a distant supernova鈥攁n exploding star. The telescope鈥檚 detector records 9.1脳1011J of light energy during the first 10 s. It鈥檚 known that this type of supernova has a visible-light power output of 5.0脳1037W for the first 10 s of the explosion. How distant is the supernova? Give your answer in light years, where one light year is the distance light travels in one year. The speed of light is 3.0脳108m/s..

A sprinter accelerates from rest. Is the work done on the sprinter positive, negative, or zero? Explain

A 25kg air compressor is dragged up a rough incline from r1鈫�=(1.3i^+1.3j^)m to r2鈫�=(8.3i^+2.9j^)m, where they-axis is vertical. How much work does gravity do on the compressor during this displacement?
See all solutions

Recommended explanations on Physics Textbooks

Dynamics

Read Explanation

Nuclear Physics

Read Explanation

Work Energy and Power

Read Explanation

Engineering Physics

Read Explanation

Physics of Motion

Read Explanation

Wave Optics

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.