/*! 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 track meet is held on a planet in a distant solar system. A shot-putter releases a shot at a point 2.0mabove ground level. A stroboscopic plot of the position of the shot is shown in Fig. 4-61, where the readings areapart and the shot is released at time t = 0. (a) What is the initial velocity of the shot in unit-vector notation? (b) What is the magnitude of the free-fall acceleration on the planet? (c) How long after it is released does the shot reach the ground? (d) If an identical throw of the shot is made on the surface of Earth, how long after it is released does it reach the ground?

Two ships, A and B, leave port at the same time. Ship A travels northwest at 24knots, and ship B travels at 28knotsin a direction 40掳west of south. ((1knot=1nauticalmileperhour)).What are the (a) magnitude and (b) direction of the velocity of ship A relative to B? (c) After what time will the ships be 160 nautical miles apart? (d) What will be the bearing of B (the direction of B鈥檚 position) relative to A at that time?

The position vector for an electron is r鈫�=(5.0m)i^-(3.0m)j^+(2.0m)k^.

(a) Find the magnitude ofr. (b) Sketch the vector on a right-handed coordinate system.

In Fig. 4-48a, a sled moves in the negative X direction at constant speedvswhile a ball of ice is shot from the sled with a velocityv鈬赌0=v0xi^+v0yj^relative to the sled. When the ball lands its horizontal displacement鈭�xbgrelative to the ground (from its launch position to its landing position) is measured. Figure 4-48bgives鈭�xbgas a function ofvs. Assume the ball lands at approximately its launch height. What are the values of (a)v0xand (b)voy? The ball鈥檚 displacement鈭�xbsrelative to the sled can also be measured. Assume that the sled鈥檚 velocity is not changed when the ball is shot. What is鈭�xbswhenvsis (c)and (d) 15.0 m/s?

Two seconds after being projected from ground level, a projectile is displaced40mhorizontally and 53mvertically above its launch point. What are the (a) horizontal and (b) vertical components of the initial velocity of the projectile? (c)At the instant the projectile achieves its maximum height above ground level, how far is it displaced horizontally from the launch point?
See all solutions

Recommended explanations on Physics Textbooks

Turning Points in Physics

Read Explanation

Magnetism

Read Explanation

Electricity and Magnetism

Read Explanation

Fundamentals of Physics

Read Explanation

Wave Optics

Read Explanation

Quantum 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.