Tim S.

asked • 07/19/17

I can't get word problems

A driver going down a straight highway is traveling at 70ft/sec on cruise control when he begins accelerating at a rate of 4.2 ft/sec² . The final velocity of the car is given by the function V(t) = 21/5t + 70, where V(t) is the velocity at time t.

If the car is traveling at 100 ft/sec, for how long did it accelerate? (Round to the nearest tenth of a second.)

2 Answers By Expert Tutors


Arturo O. answered • 07/19/17

5.0 (66)

Experienced Physics Teacher for Physics Tutoring

Tim S.

Thank you very much


Arturo O.

You are welcome, Tim.


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