A graph of v(t) is shown for a world-class track sprinter in a 100-m race. (See figure below. For each answer, enter a number.) Velocity (m/s) 420 14 12 2 0 2 Runner Velocity vs. Time Time (s) 8 10 (a) What is his average velocity (in m/s) for the first 4 s? m/s (b) What is his instantaneous velocity (in m/s) at t = 7 s? m/s (d) What is his time (in s) for the race? S 12 (c) What is his average acceleration (in m/s2) between 0 and 4 s? m/s²

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Chapter1: Units, Trigonometry. And Vectors
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A graph of v(t) is shown for a world-class track sprinter in a 100-m race. (See figure below. For each answer, enter a number.)
Velocity (m/s)
14
12
10
6
2
0
0
2
Runner Velocity vs. Time
4
6
Time (s)
8
10
(a) What is his average velocity (in m/s) for the first 4 s?
m/s
(b) What is his instantaneous velocity (in m/s) at t = 7 s?
m/s
(d) What is his time (in s) for the race?
12
(c) What is his average acceleration (in m/s²) between 0 and 4 s?
m/s²
Transcribed Image Text:A graph of v(t) is shown for a world-class track sprinter in a 100-m race. (See figure below. For each answer, enter a number.) Velocity (m/s) 14 12 10 6 2 0 0 2 Runner Velocity vs. Time 4 6 Time (s) 8 10 (a) What is his average velocity (in m/s) for the first 4 s? m/s (b) What is his instantaneous velocity (in m/s) at t = 7 s? m/s (d) What is his time (in s) for the race? 12 (c) What is his average acceleration (in m/s²) between 0 and 4 s? m/s²
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