8. A particle moves so that its position as a function of time is r=i-4t°j+ tk. Write expressions for a) its velocity and b) its acceleration as functions of time.
8. A particle moves so that its position as a function of time is r=i-4t°j+ tk. Write expressions for a) its velocity and b) its acceleration as functions of time.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 13P: A person lakes a trip, driving with a constant speed of 89.5 km/h, except, for a 22.0-min rest stop....
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![8. A particle moves so that its position as a function of time is ř=i-4t²j+tk. Write
expressions for a) its velocity and b) its acceleration as functions of time.
9. a) What is the magnitude of the average acceleration of
skier who, starting
from rest, reaches a speed of 8m/s when going down a slope for 5s? b) How far
does the skier travel in this time?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8d5f6522-786a-47fd-b62e-68b531d1d231%2Ff7c90b82-6a8f-43ec-81be-988e86007afa%2F6sday0u_processed.jpeg&w=3840&q=75)
Transcribed Image Text:8. A particle moves so that its position as a function of time is ř=i-4t²j+tk. Write
expressions for a) its velocity and b) its acceleration as functions of time.
9. a) What is the magnitude of the average acceleration of
skier who, starting
from rest, reaches a speed of 8m/s when going down a slope for 5s? b) How far
does the skier travel in this time?
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