gpeterson18 gpeterson18

08-12-2017
Physics

contestada

A car is traveling at 20 meters/second and is brought to rest by applying brakes over a period of 4 seconds. What is its average acceleration over this time interval?

Respuesta :

Аноним Аноним

08-12-2017

(u) = 20 m/s
(v) = 0 m/s
(t) = 4 s

0 = 20 + a(4)

4 x a = -20

so, the answer is -5 m/s^2. or -5 meter per second

Answer Link

Аноним Аноним

08-12-2017

The answer is -5 m/s^2. or -5 meter per second

Answer Link

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