Answer:
The correct answer is:
6.1 m/s² (B)
Explanation:
Acceleration = Rate of change of velocity per unit time.
Rate of change of velocity = V₂ - V₁
Therefore Acceleration = ( V₂ - V₁ ) ÷ Time
V₂ = 120m/s
V₁ = 65m/s
∴ Rate of change of velocity = 120 - 65 = 55m/s
Time = 9.0 s.
∴ Acceleration = 55 ÷ 9 = 6.1 m/s²
