alleryA car's speed reads 5, 10, 15 and 20 m/s at successive 1 s marks. What is its acceleration?
A5 m/s squared
B20 m/s squared
C1 m/s squared
D15 m/s squared
Answer & Solution
Correct answer: A. 5 m/s squared
Speed rises by 5 m/s every second, so the acceleration is a steady 5 m/s squared.
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