可汗学院:物理学

可汗学院:物理学

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加速度的笔记

相关课时:
加速度2015-10-19
笔记详情:

Acceleration is change in velocity over time.

A car can go 0-60 mph in 3 seconds.

  1. Acceleration is a "a" with arrow which it's 0 mph at begining and 60 mph at the end.

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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