/*! 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 A projectile鈥檚 launch speed is... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 4: Q29P (page 85)

A projectile鈥檚 launch speed is five times its speed at maximum height. Find launch angle胃0.

Short Answer

Expert verified

The launch angle胃0=78.5掳

Step by step solution

01

Given information

It is given that, launch speed of the projectile is five times than its speed at maximum height.

02

Determining the concept of projectile motion

This problem deals with the projectile motion of an object. The projectile motion of an object is the motion of an object thrown into the air, subject to the acceleration due to gravity.Using the standard formula for the velocity of the projectile along x axis, the launch angle of the projectile can be found.

Formula:

胃x=v0xcos0

(i)

03

To find the launch angleθ0

Velocities at maximum height are

vy=0msvx=v

With equation (i),

As v0x=5vx

胃x=5vxcos0胃0=cos115胃0=78.5掳

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

In Fig. 4-40, a ball is launched with a velocity of magnitude10.0m/s, at an angle of 50.0掳to the horizontal. The launch point is at the base of a ramp of horizontal length d1=6.00mand heightrole="math" localid="1654153249604" d2=3.60m. A plateau is located at the top of the ramp. (a)Does the ball land on the ramp or the plateau? When it lands, what are the (b) magnitude and (c) angle of its displacement from the launch point?

Figure 4-28 shows four tracks (either half- or quarter-circles) that can be taken by a train, which moves at a constant speed. Rank the tracks according to the magnitude of a train鈥檚 acceleration on the curved portion, greatest first.

An iceboat sails across the surface of a frozen lake with constant acceleration produced by the wind. At a certain instant the boat鈥檚 velocity is(6.30i^-8.42j^)m/s. Three seconds later, because of a wind shift, the boat is instantaneously at rest. What is its average acceleration for this 3.00sinterval?

After flying for 15minin a wind blowing 42km/hat an angle of 20掳south of east, an airplane pilot is over a town that is 55kmdue north of the starting point. What is the speed of the airplane relative to the air?

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)?
See all solutions

Recommended explanations on Physics Textbooks

Rotational Dynamics

Read Explanation

Magnetism and Electromagnetic Induction

Read Explanation

Physical Quantities And Units

Read Explanation

Thermodynamics

Read Explanation

Electricity

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.