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 ?

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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 ?

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: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
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
Additional examples, video, and pra
PLUS
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 Additional examples, video, and pra PLUS
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