加速度=速度变化/时间 加速度单位:m/s²
Acceleration is change in velocity over time.
A car can go 0-60 mph in 3 seconds.
So it is 60-0/3=20 miles/hour/second (miles/hour*seconds).
The final answer is 20/3600 miles second^2 that equals 1/180 mile/second.
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Jurassicpark2014-09-13
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