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Q. A car is traveling 23 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 6.5 m/s2. How far does the car go before it stops?

Q. An advertisement claims that a sportscar can accelerate from rest to 100 km/hr in 7.70 s. What is its acceleration (in meters/second^2)?

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