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a car is running with the velocity of 72km/hr .what will be its velocity after 5s if its acceleration is -2m/s^2?​
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5 votes
a car is running with the velocity of 72km/hr .what will be its velocity after 5s if its acceleration is -2m/s^2?​

User Kresimir Pendic
by
4.9k points

1 Answer

6 votes
  • Initial velocity=u=72km/h

Convert to m/s


\\ \rm\Rrightarrow 72* (5)/(18)=20m/s

  • Acceleration=a=-2m/s^2
  • Time=t=5s
  • Final velocity=v


\\ \rm\Rrightarrow v=u+at


\\ \rm\Rrightarrow v=20+(-2)(5)


\\ \rm\Rrightarrow v=20-10


\\ \rm\Rrightarrow v=10m/s

User MEE
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