alleryStart learning →Phillip walks 428 m west from his house to school with an average velocity of 1.7 m/s west. How long does the walk take him?
A25 s
B252 s
C428 s
D730 s
Answer & Solution
Correct answer: B. 252 s
1. Rearrange average velocity: delta t = delta d / v_avg.
2. delta t = 428 m / 1.7 m/s = 251.8 s, which rounds to 252 s.
3. Multiplying instead of dividing gives the 730 s trap, and copying the distance alone gives the 428 s trap.
_Source: OpenStax Physics (CC BY 4.0), Ch 2 "Motion in One Dimension", section 2.2 Speed and Velocity_
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