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A building's elevator initially starts on the ground floor. It moves 21.6 m upwards to the sixth floor. It then goes down 7.20 m to the fourth floor. Finally, it goes up another 18.0 m to the ninth floor. The whole trip takes 134 seconds to complete. Assume up is the positive direction.
a) What distance did the elevator travel?
b) What was its total displacement?
c) What is the average speed?
d) What is the average velocity?
Use the force or spring constant from part (a), compute the potential energy stored in the spring when the spring is displaced 2.40 cm
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e drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half thedistance at 41.0mph, What is her average speed on the return trip
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