Look at the velocity-time graph given. 12 10 v (m/s) 4 2 TO 20 30 40 ii. 5-15 seconds t (s) iii. 15-20 seconds i.0-5 seconds iv. 20-40 seconds During which interval or intervals is the train's acceleration zero? A iv only B i only c i only D ii only

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Look at the velocity-time graph given.
12
10
...
v (m/s)
4
2
TO 20 30
t (s)
i.0.5 seconds
i. 5-15 seconds
iv. 20-40 seconds
ii. 15-20 seconds
During which interval or intervals is the train's acceleration zero?
(A) iv only
B i only
ii only
D ii only
Transcribed Image Text:Look at the velocity-time graph given. 12 10 ... v (m/s) 4 2 TO 20 30 t (s) i.0.5 seconds i. 5-15 seconds iv. 20-40 seconds ii. 15-20 seconds During which interval or intervals is the train's acceleration zero? (A) iv only B i only ii only D ii only
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