• Change of speed during the 40 th second of motion: Av m/s ** Distance covered during the 160 th second of motion: т ** • The total distance covered after 160 s of motion: m

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 82AP: Professional baseball player Nolan Ryan could pitch a baseball at approximately 160.0 km/h. At that...
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Change of speed during the 40
th
second of motion: Av :
m/s **
Distance covered during the 160
th
second of motion:
т
m **
• The total distance covered after 160 s of
motion:
m
Transcribed Image Text:Change of speed during the 40 th second of motion: Av : m/s ** Distance covered during the 160 th second of motion: т m ** • The total distance covered after 160 s of motion: m
"llEO Í L O
OD: D 12:03
A vehicle traveling between 2 stations that
are 2 km apart starts from rest and
accelerates over 2/4 of the total distance.
After reaching the maximum speed, the
driver steps on the brakes and the vehicle
decelerates at a constant rate and comes to
rest after 2 km and a total travel duration
of 4 min. Analyze the motion of the vehicle
on a appropriate speed - time graph and
then, calculate:
• The maximum speed observed during
the journey:
m/s
• The duration of acceleration tacc :
s ;
• The duration of deceleration tdec :
• The acceleration :
m/s?
• and magnitude of the deceleration
m/s²
You may need an speed-time graph for
more accuracy on the following
II
Transcribed Image Text:"llEO Í L O OD: D 12:03 A vehicle traveling between 2 stations that are 2 km apart starts from rest and accelerates over 2/4 of the total distance. After reaching the maximum speed, the driver steps on the brakes and the vehicle decelerates at a constant rate and comes to rest after 2 km and a total travel duration of 4 min. Analyze the motion of the vehicle on a appropriate speed - time graph and then, calculate: • The maximum speed observed during the journey: m/s • The duration of acceleration tacc : s ; • The duration of deceleration tdec : • The acceleration : m/s? • and magnitude of the deceleration m/s² You may need an speed-time graph for more accuracy on the following II
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