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A car is sitting at a traffic light. When the light turns green, the car begins moving, accelerating at a constant rate. After 14.9 seconds the car has moved 266 meters. What is the acceleration of the car?

User Nbecker
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2 Answers

17 votes
17 votes

Answer:

The acceleration 2.4 m/s²

Step-by-step explanation:

Given:

V₀ = 0 m/s - Initial vehicle speed

t = 14.9 s - Time

D = 266 m - Distance traveled by car

__________

a - ? - the acceleration

D = V₀·t + a·t² / 2;

V₀ = 0

D = a·t² / 2;

a = 2·D / t² = 2·266 / 14.9² ≈ 2.4 m/s²

User Nbari
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22 votes
22 votes
17-18 MPH

I’m thinking?
User Noitse
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