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12. A frain moves from rest to a speed of 25 m/s in 30.0 seconds. What is its acceleration?

Sagot :

  • initial velocity=u=0m/s
  • Final velocity=v=25m/s
  • Time=t=30s

[tex]\\ \tt\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]

[tex]\\ \tt\longmapsto Acceleration=\dfrac{25-0}{30}[/tex]

[tex]\\ \tt\longmapsto Acceleration=\dfrac{25}{30}[/tex]

[tex]\\ \tt\longmapsto Acceleration=0.8m/s^2[/tex]

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