/*! 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 particle Ptravels with constant speed on a circle of radiusr=3.00m(Fig. 4-56) and completes one revolution in 20.0s. The particle passes through Oat time t= 0. State the following vectors in magnitude angle notation (angle relative to the positive direction of x).With respect to 0, find the particle鈥檚 position vectorat the times tof (a) 5.00s, (b)7.50s, and (c)10.0s. (d) For the 5.00sinterval from the end of the fifth second to the end of the tenth second, find the particle鈥檚 displacement. For that interval, find (e) its average velocity and its velocity at the (f) beginning and (g) end. Next, find the acceleration at the (h) beginning and (i) end of that interval.

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?

A certain airplane has a speed of290.0km/hand is diving at an angle of胃=30.0掳below the horizontal when the pilot releases a radar decoy (Fig. 4-33). The horizontal distance between the release point and the point where the decoy strikes the ground isd=700m(a) how long is the decoy in the air? (b)How high was the release point?

A soccer ball is kicked from the ground with an initial speed of19.5m/sat an upward angle of45掳. A player55m away in the direction of the kick starts running to meet the ball at that instant. What must be his average speed if he is to meet the ball just before it hits the ground?

In the overhead view of Fig.4-47, Jeeps P and B race along straight lines, across flat terrain, and past stationary border guard A. Relative to the guard, B travels at a constant speed of 20.0m/s, at the angle胃2=30.0掳. Relative to the guard, P has accelerated from rest at a constant rate of 0.400m/s2at the angle 胃1=60.0掳At a certain time during the acceleration, P has a speed of40.0m/s. At that time, what are the (a) magnitude and (b) direction of the velocity of P relative to B and the (c) magnitude and (d) direction of the acceleration of P relative to B?
See all solutions

Recommended explanations on Physics Textbooks

Classical Mechanics

Read Explanation

Kinematics Physics

Read Explanation

Circular Motion and Gravitation

Read Explanation

Rotational Dynamics

Read Explanation

Fundamentals of Physics

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.