alleryStart learning →How long does it take to accelerate from 8.0 m/s to 20.0 m/s at a constant rate of 3.0 m/s^2?
A0.25 s
B4.0 s
C9.3 s
D36 s
Answer & Solution
Correct answer: B. 4.0 s
1. delta v = 20.0 m/s - 8.0 m/s = 12.0 m/s.
2. t = delta v / a = 12.0 m/s / 3.0 m/s^2.
3. t = 4.0 s.
_Source: OpenStax Physics (CC BY 4.0), Ch 3 "Acceleration", section 3.1 Acceleration_
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