contestada

A dragster going 15m/s increases its velocity to 25 m/s north in 4 seconds.
What is its acceleration during this time interval?

Respuesta :

Initial speed, v₁ = 15 m/s
Final speed, v₂  = 25 m/s
Duration of the acceleration, t = 4 s

Calculate the acceleration.
a = (v₂ - v₁)/t
   = (25-15 m/s)/(4 s)
   = 2.5 m/s²

Answer: 2.5 m/s²
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