KillerMDFK1460 KillerMDFK1460

12-12-2018
Chemistry

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A plane traveling at 80m/s lands on a runway and comes to rest after 10 seconds. What was the planes deceleration?

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emeenalqabani emeenalqabani

12-12-2018

a = change in velocity over change in time

a = (-80m/s)/10s
a = -8m/s^2

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aftarahmadsami aftarahmadsami

12-12-2018

- 8 meter/sec

( - ) sign denotes deceleration.

a= (Final velocity-initial velocity)/Time

=(0-80)/10

= -8 meter/sec

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