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02-09-2020
Physics

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A car stops in 120 m. If it has an acceleration of –5m/s 2 , how long did it take to stop

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aayu0302 aayu0302

02-09-2020

Answer:

t=240s

Explanation:

Distance=120m

Acceleration=-5m/s^2

v=0

Let u=x m/s

Using equation v^2-u^2=2as:-

0-x=2(-5)(120)

-x=-1200

x=1200m/s

Using now equation v=u+at:-

0=1200+-5t

5t=1200

t=240s

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