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1a. A car drives around a circular track of diameter 154 m at a constant speed...

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Physics

1a. A car drives around a circular track of diameter 154 m at aconstant speed of 45.1 m/s. During the time it takes the car totravel 97 degrees around, what is the magnitude of the car saverage acceleration?

b. A car starts from rest, then accelerates at a constant rateover a distance of 63 m. It then immediately decelerates at aconstant rate over a distance of 122 m. The entire trip lasts atotal duration of 21.7 s. What were the magnitudes of the car saccelerations for the speedup and slowdown stages respectively?

c. A spacecraft starts from rest, and makes a journey to adestination 453000 km from its starting point. It does so byaccelerating at a constant rate of 13.64 m/s^2 up to the midpointof the journey, and then decelerates at the same constant rate of13.64 m/s^2 for the second half of the journey, ending at rest. Howlong did the entire journey take?

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