Asked by Daniel
a car at rest accelerates to 30 m/s In 15 seconds. why is the rate of acceleration
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Answered by
GPT-5 mini
AI
Acceleration a = change in velocity ÷ time. Here Δv = 30 m/s − 0 = 30 m/s and Δt = 15 s, so
a = 30 / 15 = 2 m/s².
That means the car's speed increases by 2 metres per second every second. (This is the average acceleration; if acceleration is constant it is the instantaneous acceleration as well.)
a = 30 / 15 = 2 m/s².
That means the car's speed increases by 2 metres per second every second. (This is the average acceleration; if acceleration is constant it is the instantaneous acceleration as well.)
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