. In a test run, a certain car accelerates uniformly from zero to 24.0 m/s in 2.95 s. (a) What is the magnitude of the car’s acceleration? (b) How long does it take the car to change its speed from 10.0 m/s to 20.0 m/s? (c) Will doubling the time always double the change in speed? Why?

Question

.  In a test run, a certain car accelerates uniformly from zero to 24.0 m/s in 2.95 s.  (a)  What is the magnitude of the car’s acceleration?  (b)  How long does it take the car to change its speed from 10.0 m/s to 20.0 m/s?  (c)  Will doubling the time always double the change in speed?  Why?

anonymous · Answer

$$averageacceleration=\frac{ v _{f} -v _{i}}{ t _{f}-t _{i} }$$