Question: 1. A 800 kg rocket, starting from rest, accelerates upwards from the Earth's surface at a rate of 6.0 m/s 2 . Draw a free

1. A 800 kg rocket, starting from rest, accelerates upwards from the Earth's surface at a rate of 6.0 m/s2.

  1. Draw a free body diagram of the rocket, labeling all relevant forces
  2. Sketcha position - time graph for the rocket.
  3. Sketcha velocity - time graph for the rocket
  4. Calculate the time it takes the rocket to travel 950 m
  5. Calculate the force exerted by the rockets engines
  6. Calculate the work done in the first 15.0 s

2. Two pennies are sitting on a table, 1.2 m high. Both fall off the table at the same time, but one is pushed at a horizontal speed of 4.1 m/s.

  1. Which penny lands first?
  2. How far from the table does the pushed penny land?

3. Your best friend is out on a Friday morning run. They travel 6.4km [N] in 22 minutes at a constant velocity, stop for 5 minutes to rest and have some water, then turn and travel 6.4km [S] to get back home in 19 minutes, again at a constant velocity.

  1. Sketch a position-time graph for Hugh's run
  2. Sketch a velocity-time graph for his run
  3. Calculate Hugh's total displacement and average velocity.

4. A hiker gets lost in the forest; first they walk at 1.0 m/s [E] for 12.0 s, then panic and change direction and run at 5.0 m/s [S 450 W] for 15.0 s Find:

  1. The Hiker's total displacement
  2. The Hiker's average velocity.

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