/*! 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} Q21P 聽A dart is thrown horizontally ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 4: Q21P (page 85)

A dart is thrown horizontally with an initial speed of10m/stoward pointP, the bull鈥檚-eye on a dart board. It hits at pointQon the rim, vertically belowP,0.19s later. (a)What is the distancePQ? (b) How far away from the dart board is the dart released?

Short Answer

Expert verified

(a) Distance,PQis0.18m

(b) Distance of the released dart from the dart board is1.9m

Step by step solution

01

Given information

It is given that,


02

To understand the concept of free fall

Considering the concept of free fall and the fact that there is no acceleration in the horizontal direction, it is possible to find the distance by which dart moves down, given the time for the horizontal travel.This problem is based on kinematic equations that describe the motion of an object with constant acceleration. Here, the second kinematic equation can be used to find the distances.

Formula:

The displacement in kinematic equation can be written as,

(i)

03

to find the distance PQ

Vertical distance of the dart is givenby,

04

(b) to find the distance of the released dart from the dart board

It is given that,

Thus,

x=1.9m

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 light plane attains an airspeed of 500km/h. The pilot sets out for a destination 800kmdue north but discovers that the plane must be headed role="math" localid="1655442378207" 20.0掳east of due north to fly there directly. The plane arrives in2.00hr. What were the (a) magnitude and (b) direction of the wind velocity?

A lowly high diver pushes off horizontally with a speed of2.00m/sfrom the platform edge10.0m above the surface of the water. (a) At what horizontal distance from the edge is the diver0.800s after pushing off? (b)At what vertical distance above the surface of the water is the diver just then? (c)At what horizontal distance from the edge does the diver strike the water?

In 1939 or 1940, Emanuel Zacchini took his human cannonball act to an extreme: After being shot from a cannon, he soared over three Ferris wheels and into a net (Fig.4-39). Assume that he is launched with a speed of 26.5 m/sand at an angle of 53.0掳. (a)Treating him as a particle, calculate his clearance over the first wheel. (b) If he reached maximum height over the middle wheel, by how much did he clear it? (c) How far from the cannon should the net鈥檚 center have been positioned (neglect air drag)?

In shot put, the shot is put (thrown) from above the athlete鈥檚 shoulder level. Is the launch angle that produces the greatest range45掳, less than45掳, or greater than45掳?

In Fig. 4-54, a lump of wet putty moves in uniform circular motion as it rides at a radius of 20.0cmon the rim of a wheel rotating counterclockwise with a period of 5.00 ms .The lump then happens to fly off the rim at the 5 o鈥檆lock position (as if on a clock face). It leaves the rim at a height of h=1.20m from the floor and at a distance d=2.50 m from a wall. At what height on the wall does the lump hit?
See all solutions

Recommended explanations on Physics Textbooks

Physics of Motion

Read Explanation

Atoms and Radioactivity

Read Explanation

Oscillations

Read Explanation

Torque and Rotational Motion

Read Explanation

Radiation

Read Explanation

Space Physics

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.