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AssignmentMultiple Choice

Speed and Velocity

Question 1 • FL-2003010-M/J Physical Science

Ben walks 500 meters from his house to the corner store. He then walks back toward his house, but continues 200 meters past his house to talk to a neighbor. It takes Ben 17 minutes from the time he leaves his house until he stops to talk to his neighbor.What is Ben’s average velocity? Round to the nearest tenth.

Answer
A
0.2 m/s
B
0.5 m/s
C
0.7 m/s
D
1.2 m/s

Explanation

Ben’s displacement is 200 meters from his house, because he ends 200 meters past where he started. The total time is 17 minutes, or 17 × 60 = 1,020 seconds. Average velocity is displacement divided by time: 200 ÷ 1,020 ≈ 0.196 m/s, which rounds to 0.2 m/s. The correct choice is A, 0.2 m/s.

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