The graph shows a car's velocity over time. Velocity versus Time
60
50
40
Velocity, in mph forward
30
20
10
1 2 3 4 5 6
Time, in seconds (s)
During which time period does the car have the greatest acceleration?
A. Between 1 and 2 seconds
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B. Between 0 and 1 seconds
C. Between 2 and 4 seconds
D. Between 1 and 6 seconds

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z