what is the magnitude of the cars acceleration how long does it take the car to change its speed?

In a test run, a certain car accelerates uniformly from zero to 22.0 m/s in 2.30 s.

(a) What is the magnitude of the car's acceleration?

 ______m/s2

(b) How long does it take the car to change its speed from 11.0 m/s to 22.0 m/s?

 ________s

(c) Will doubling the time always double the change in speed?

Yes

No

Why?

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