College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
A picture tosses baseball up along y axis , with an initial speed of 12 m/s.find long does the ball take to reach it's maximum height ?

Transcribed Image Text:26
CHAPTER 2 MOTION ALONG A STRAIGHT
motion. The acce
ward. The velocity
ascent, the magni
comes zero. Beca
During the descen
CHECKPOIN
(a) If you toss a ba
cent, from the relea
highest point back t
negative point?
Sample P
Time for füll up-down
In Fig. 2-11, a pitcher tosses a baseball up along a y axis, with
an initial speed of 12 m/s.
(a) How long does the ball take to reach its maximum
height?
KEY IDEAS
(1) Ônce the ball leaves the pitcher and before it returns to
his hand, its acceleration is the free-fall acceleration a =-g. y
Because this is constant, Table 2-1 applies to the motion. (2)
The velocity v at the maximum height must be 0.
%3D
5560

Transcribed Image Text:ng v, a, and the initial velocity
Vo = 12 m/s, and seeking t, we solve Eq.2-11, which contains
Ball
(c)
its
V =0 at
highest point
Са
Yo.
it fo
During
descent,
or
During ascent,
a =-g,
speed decreases,
and velocity
a=-g
speed
increases,
and velocity
becomes
If we
cons:
becomes less
positive
more
negative
Solvir
Fig. 2-11 A pitcher tosses a
baseball straight up into the air.
The equations of free fall apply
for rising as well as for falling
objects, provided any effects
from the air can be neglected.
y = 0
There
becaus
way up
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