Exciting 2D Acceleration Practice Problemsname:______Per: _____

Exciting 2D Acceleration Practice Problemsname:______Per: _____

Exciting 2D Acceleration Practice ProblemsName:______Per: _____

Directions: On a separate sheet of paper, answer the following questions. For credit, ALL work (the same 8 steps you always have to show) must be shown.

Walking:

  1. An astronaut dropped a feather from a height of 1.35m while on the moon. If the acceleration on the moon is 1.64m/s2 (because it happens to be 1/6th the size of Earth):
  2. How should the drop time on the moon compare to the drop time on Earth? Explain.
  3. How long does it take for the feather to reach the lunar surface?

Think…; t=1.28s

  1. A rocket is flying horizontally through the sky with a velocity of 27.0m/s when the booster rockets are turned on. If the rocket then covers 115m in 3.29s while flying perfectly horizontal,
  2. What is the horizontal acceleration?
  3. Why isn’t the horizontal acceleration zero as in many problems you do?
  4. What is the new velocity of the rocket?

a=4.84m/s2; Think…; vf=42.9m/s

Jogging:

  1. While driving the lunar rover (on the moon… hence “lunar”) an astronaut drives up an inclined moon slope of 39.5˚… accept this and move on.
  2. If she literally drives 18.0m, what is her elevation gain?
  3. If she is instructed by Mission Control (which is located where?) to make a horizontal displacement of 25.0m, how much further up the incline does she need to drive?

Δy=11.5m; 14.4m further

  1. As the shuttle flies horizontally, the solid rocket boosters (SRB) are released (the white things next to the big orange fuel tank). If the shuttle is 46.0km above the Earth at this time and the SRBs cover 226km before landing in the Atlantic Ocean:
  2. What is the initial velocity of the SRBs?
  3. What is the resultant velocity of the SRBs right before landing in the ocean?

vix=2330m/s; vi=2520m/s at 22.2˚

Sprinting:

  1. While driving the lunar rover an astronaut decides to take it off of a jump set at an angle of 26.8˚. If she reaches a max height increase of 17.2m and lands the rover 54.5m away from her take off location and at the same height, how fast was she traveling as she left the jump? Hint… where is this taking place again?

vi=9.60m/s (vix=5.898m/s, viy=7.58m/s)

  1. While playing around on the moon, some astronauts set up a cannon and a landing net. They draw straws and it turns out that YOU will be launched from the cannon. Being a super smart Physics astronaut, you decided to do some calculations before being launched. The cannon is currently set at 32.0˚ and always shoots with a velocity of 7.50m/s. The net is currently located 35.00m away and at the same height from which you will be launched.
  2. Will you land on the net with the current set up? Evidence?
  3. For Champions: If not, what angle should you set the cannon at to land on the net?

Δx=30.8m; champions don’t need answer keys

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