A car traveling at 40 m/s starts to decelerate steadily. It comes to a complete stop in 5 seconds. What is its acceleration? m/s2

Question

Physics

Alyssa Guzman

11 October, 10:59

A car traveling at 40 m/s starts to decelerate steadily. It comes to a complete stop in 5 seconds. What is its acceleration? m/s2

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Answers (1)

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Reyna Buchanan · Answer 1

Acceleration =

(change of speed) / (time for the change).

Change of speed = (speed at the end) - (speed at the beginning)

= (zero) - (40 m/s)

= - 40 m/s.

Acceleration = (-40 m/s) / (5 seconds)

= - 8 m/s².