position (m) 80 60 40 20 - 20 -40 10 20 30 40 50 time (sec) How much is the instantaneous velocity at t = 20 s? O + 4 m/s O : 4 m/s O + 40 m/s O . 40 m/s

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position (m)
80
60
40
20
- 20
-40
10
30
40
50
time (sec)
How much is the instantaneous velocity at t = 20 s?
+ 4 m/s
4 m/s
O + 40 m/s
- 40 m/s
20
Transcribed Image Text:position (m) 80 60 40 20 - 20 -40 10 30 40 50 time (sec) How much is the instantaneous velocity at t = 20 s? + 4 m/s 4 m/s O + 40 m/s - 40 m/s 20
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