Consider the same function in Q5, but with a change to the motion at 7 seconds. (Note assume all values are exactly correct to 3 significant figures) v(t) = 2.7+ - for 0

Physics for Scientists and Engineers, Technology Update (No access codes included)
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Chapter4: Motion In Two Dimensions
Section: Chapter Questions
Problem 4.64AP: Towns A and B in Figure P4.64 are 80.0 km apart. A couple arranges to drive from town A and meet a...
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Consider the same function in Q5, but with a change to the motion at 7 seconds.
(Note assume all values are exactly correct to 3 significant figures)
v(t) = 2.7 + - for 0 <t<7
8
then
v(t) =? – 0.900t for 7 <t <?
Where t is in seconds and v(t) is in m/s
4
8
10
12
time (s)
velocity (m/s)
Transcribed Image Text:Consider the same function in Q5, but with a change to the motion at 7 seconds. (Note assume all values are exactly correct to 3 significant figures) v(t) = 2.7 + - for 0 <t<7 8 then v(t) =? – 0.900t for 7 <t <? Where t is in seconds and v(t) is in m/s 4 8 10 12 time (s) velocity (m/s)
What is the velocity of the car at 7 seconds?
Temptates Symbols undo redo reset keyboard shortcuts help
V =
m/s
Submit
Request Answer
Part B
At t = 7 seconds the acceleration of the car changes to a constant -0.900 m/s² approximately illustrated by one of the many straight lines above. (Note the straight lines on the graph are not exact, for illustration only)
At what time t =? will the car come to a complete stop?
Templates Symbols undo redo reset keyboard shortcuts help
S
Submit
Request Answer
Part C
What will be the displacement of the car from t = 7 seconds until it stops?
Temptates Symbols undo redo reset keyboard shortcuts help
d =
m
Transcribed Image Text:What is the velocity of the car at 7 seconds? Temptates Symbols undo redo reset keyboard shortcuts help V = m/s Submit Request Answer Part B At t = 7 seconds the acceleration of the car changes to a constant -0.900 m/s² approximately illustrated by one of the many straight lines above. (Note the straight lines on the graph are not exact, for illustration only) At what time t =? will the car come to a complete stop? Templates Symbols undo redo reset keyboard shortcuts help S Submit Request Answer Part C What will be the displacement of the car from t = 7 seconds until it stops? Temptates Symbols undo redo reset keyboard shortcuts help d = m
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