Physical Science 9 Assignment #4
Solutions
  1. A jogger starts running from the IC Norte. He starts at 3:15:15pm and arrives at Libertador, 1 km distance at 3:17:30pm. What is the elapsed time? What is the displacement of the jogger from the IC? What is the jogger's velocity in m/s? What is the jogger's speed?
  2. A cyclist is cycling north at a constant velocity of 5.0 m/s. At 1:00:00pm she is 500 m south of Oruro. What is the time after 200 minutes has passed? What will the displacement of the cyclist be? What will the position of the cyclist be?
  3. A car is traveling at 10 m/s up the Pando. The driver hits the accelerator and after 5.0 seconds the car is traveling at 15 m/s. What is the accleration of the car? If the driver hits the brakes and the car comes to a halt in 3.0 seconds, what is the acceleration during the braking process? (Remember direction. Acceleration is a vector.)
  4. A ball is dropped from rest from a table 1.0 m high. After 0.05 seconds how far will the ball have fallen? What will its velocity be? How long until it hits the floor? With what speed will it hit the floor?
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