/*! 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} Q28E A car sits on an entrance ramp ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: Q28E (page 60)

A car sits on an entrance ramp to a freeway, waiting for a break in the traffic. Then the driver accelerates with constant acceleration along the ramp and onto the freeway. The car starts from rest, moves in a straight line, and has a speed of 20 m/s (45 mi/) when it reaches the end of the 120-mlong ramp. (a) What is the acceleration of the car? (b) How much time does it take the car to travel the length of the ramp? (c) The traffic on the freeway is moving at a constant speed of 20 m/s. What distance does the traffic travel while the car is moving the length of the ramp?

Short Answer

Expert verified

(a) Acceleration of the car= 1.66 m/s2

(b) Time taken by car to travel the length of ramp = 12.04 s.

(c) The distance travelled = 240.8 m.

Step by step solution

01

Identification of the given data

Speed of the car (v) =20 m/s

Length of the ramp (s) =120 m

Initial velocity (u) = 0

02

calculation for the acceleration

(a)

Acceleration of the car can be calculated by using,

v2=u2+(2脳a脳s)

Where, v= final velocity, u=initial velocity, a=acceleration due to gravity, and s=distance traveled

v2=u2+(2脳a脳s)202=0+(2脳a脳120)a=1.66鈥�m/s2

Thus, the value of acceleration isa=1.66m/s2

03

calculation for the time taken

(b)

As we know that,

v=a脳t

Then the required for car to travel ramp

t=201.66t=12.04s

Thus, the time taken by the car t = 12.04 s

04

calculation for the distance

(c)

d=v脳t Substituting the values,

d=20m/s脳12.04sd=240.8m

Thus, the distance covered by the card=24.08 m

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 closed and elevated vertical cylindrical tank with diameter 2.00 m contains water to a depth of 0.800 m. A worker accidently pokes a circular hole with diameter 0.0200 m in the bottom of the tank. As the water drains from the tank, compressed air above the water in the tank maintains a gauge pressure of 5 X 103Pa at the surface of the water. Ignore any effects of viscosity. (a) Just after the hole is made, what is the speed of the water as it emerges from the hole? What is the ratio of this speed to the efflux speed if the top of the tank is open to the air? (b) How much time does it take for all the water to drain from the tank? What is the ratio of this time to the time it takes for the tank to drain if the top of the tank is open to the air?

Is a pound of butter on the Earth the same amount as a pound of butter on Mars? What about a kilogram of butter? Explain.

Air traffic controllers give instructions called 鈥渧ectors鈥� to tell airline pilots in which direction they are to fly. If these are the only instructions given, is the name 鈥渧ector鈥� used correctly? Why or why not?

Question: How many nanoseconds does it take light to travel 1.00 ft in vacuum? (This result is a useful quantity to remember.)?

A medical technician is trying to determine what percentage of a patient鈥檚 artery is blocked by plaque. To do this, she measures the blood pressure just before the region of blockage and finds that it is 1.20脳104Pa, while in the region of blockage it is role="math" localid="1668168100834" 1.15脳104Pa. Furthermore, she knows that blood flowing through the normal artery just before the point of blockage is traveling at 30.0 cm/s, and the specific gravity of this patient鈥檚 blood is 1.06. What percentage of the cross-sectional area of the patient鈥檚 artery is blocked by the plaque?
See all solutions

Recommended explanations on Physics Textbooks

Nuclear Physics

Read Explanation

Fields in Physics

Read Explanation

Mechanics and Materials

Read Explanation

Waves Physics

Read Explanation

Famous Physicists

Read Explanation

Work Energy and Power

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.