Acceleration Physics A

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Dec 6, 2023

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Acceleration Physics A 1- Until a train is a safe distance from the station, it must travel at 5 m/s. Once the train is on open track, it can speed up to 45 m/s. If it takes a train 8 seconds to reach 45 m/s, what is the acceleration of the train? Ans: 5 m/s^2 2- Until a train is a safe distance from the station, it must travel at 5 m/s. Once the train is on open track, it can speed up to 45 m/s. If it takes a train 8 seconds to reach 45 m/s, what is the acceleration of the train? A) -0.08 m/s^2 3- Felipe drives his car at a velocity of 28 m/s. He applies the brake, which slows the vehicle down at a rate of 6.4 m/s2 and causes it to slow to a stop. How long does it take for the car to stop? Round your answer to the nearest tenth. Ans: 4.4 s 4- A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number. Ans: 91 m 5- Margy is trying to improve her cardio endurance by performing an exercise in which she alternates walking and running 100.0 m each. If Margy is walking at 1.4 m/s and accelerates at 0.20 m/s2 during one of the running portions, what is her final velocity at the end of the 100.0 m? Round your answer to the nearest tenth. Ans: 6.5 m/s 6- Which scenario could be represented by the motion map? a) A car speeds up to merge onto the freeway and then continues at a constant velocity. b) A car speeds up to pass a truck, then slows down to a constant velocity. c) A car slows to stop at a stop sign. Once traffic is clear, the car speeds up. d) A car slows to make a U-turn, then continues in the opposite direction.
c) A car slows to stop at a stop sign. Once traffic is clear, the car speeds up.
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