Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

(II) A sports car moving at constant speed travels 110 $\mathrm{m}$ in5.0 $\mathrm{s}$ . If it then brakes and comes to a stop in 4.0 $\mathrm{s}$ , what isthe magnitude of its acceleration in $\mathrm{m} / \mathrm{s}^{2},$ and in $g^{\prime} \mathrm{s}$$\left(g=9.80 \mathrm{m} / \mathrm{s}^{2}\right) ?$

$0.56 g^{\prime} \mathrm{s}$

Physics 101 Mechanics

Chapter 2

Describing Motion: Kinematics in One Dimension

Physics Basics

Motion Along a Straight Line

Motion in 2d or 3d

Newton's Laws of Motion

University of Washington

Hope College

University of Winnipeg

McMaster University

Lectures

03:28

Newton's Laws of Motion are three physical laws that, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces. These three laws have been expressed in several ways, over nearly three centuries, and can be summarised as follows: In his 1687 "Philosophiæ Naturalis Principia Mathematica" ("Mathematical Principles of Natural Philosophy"), Isaac Newton set out three laws of motion. The first law defines the force F, the second law defines the mass m, and the third law defines the acceleration a. The first law states that if the net force acting upon a body is zero, its velocity will not change; the second law states that the acceleration of a body is proportional to the net force acting upon it, and the third law states that for every action there is an equal and opposite reaction.

04:16

In mathematics, a proof is a sequence of statements given to explain how a conclusion is derived from premises known or assumed to be true. The proof attempts to demonstrate that the conclusion is a logical consequence of the premises, and is one of the most important goals of mathematics.

03:44

(II) A sports car moving a…

03:29

0:00

02:54

A sports car moving at con…

A sports car movi…

06:04

If the car passes point $A…

03:38

The car starts from rest a…

04:06

A car starts from rest and…

04:00

A sports car accelerates f…

If we have a car that's initially moving 110 meters in five seconds, then we know it's philosophy. It's gonna be 110 meters over five seconds, which is 22 meters per second. And I'm gonna call that are our initial velocity V zero is 22 meters per second and if it comes to a stop in four seconds, that means after four seconds it's V equals zero and R T is going to be 4.0 seconds and I want to find its acceleration. Uh, we have V it's gonna equal the initial velocity, plus the acceleration times time. And so now I'll just plug in these feelings that I have, uh, be it's gonna be zero equals 22 plus 4.0, a And then if we sell for a so 4.0, A equals minus 22 then eh equals 5.5. Uh, sorry. Negative meters per second squared. And if you want to find what this is in terms of G, uh, weaken just divides. We want the magnitude only so absolute value of negative 5.5 is 5.5, and I'm gonna divide that by 9.80 and we get 0.56 G's

View More Answers From This Book

Find Another Textbook

03:30

Shivering. You have no doubt noticed that you usually shiver when you get ou…

04:15

$\bullet$ $\bullet$ An object suspended from a spring vibrates with simple h…

07:23

A steel ring with a $2.5000-$ in. inside diameter at $20.0^{\circ} \mathrm{C…

04:01

Compact discs. When a compact disc (CD) is playing, the angular speed of the…

00:48

$\bullet$ A 7300 $\mathrm{N}$ elevator is to be given an acceleration of 0.1…

05:28

$\bullet$ $\bullet$ Torque and force on adipole. An electric dipole is i…

03:08

(II) The position of a rabbit along a straight tunnel as afunction of ti…

04:28

$\bullet$ A 0.500 kg glider on an air track is attached to the end of an ide…

01:19

(I) A car accelerates from 12 $\mathrm{m} / \mathrm{s}$ to 21 $\mathrm{m} / …

13:10

$\bullet$$\bullet$ The graph in Figure 15.44 shows a $p V$ diagram for 3.25 …