A car starts from rest and travels for 7.0 s with a uniform acceleration of+2.6 m/s2. The driver then applies the brakes, causing a uniformacceleration of -2.5 m/s2. If the brakes are applied for 2.0 s, determineeach of the following.(a) How fast is the car going at the end of the braking period?m/s(b) How far has the car gone?mNeed Help?Read ItMYΝΟTESASK YOUR TEACHERA ball is thrown vertically upward with a speed of 40.0 m/s.(a) How high does it rise?m(b) How long does it take to reach its highest point?(c) How long does the ball take to hit the ground after it reaches itshighest point?(d) What is its velocity when it returns to the level from which itstarted?m/s

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A car starts from rest and travels for 7.0 s with a uniform acceleration of +2.6 m/s?. The driver then applies the brakes, causing a uniform acceleration of -2.5 m/s2. If the brakes are applied for 2.0 s, determine each of the following. (a) How fast is the car going at the end of the braking period? m/s (b) How far has the car gone?

A car starts from rest and travels for 7.0 s with a uniform acceleration of +2.6 m/s?. The driver then applies the brakes, causing a uniform acceleration of -2.5 m/s2. If the brakes are applied for 2.0 s, determine each of the following. (a) How fast is the car going at the end of the braking period? m/s (b) How far has the car gone?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 112CP: In a 100-rn race, the winner is timed at 11.2 s. The second-place finisher’s time Is 11.6 s. How far...

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Concept explainers

Displacement, Velocity and Acceleration

In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.

Linear Displacement

The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.

Topic Video

Question

A car starts from rest and travels for 7.0 s with a uniform acceleration of
+2.6 m/s2. The driver then applies the brakes, causing a uniform
acceleration of -2.5 m/s2. If the brakes are applied for 2.0 s, determine
each of the following.
(a) How fast is the car going at the end of the braking period?
m/s
(b) How far has the car gone?
m
Need Help?
Read It
MYΝΟTES
ASK YOUR TEACHER
A ball is thrown vertically upward with a speed of 40.0 m/s.
(a) How high does it rise?
m
(b) How long does it take to reach its highest point?
(c) How long does the ball take to hit the ground after it reaches its
highest point?
(d) What is its velocity when it returns to the level from which it
started?
m/s

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