Physics olympics week 4

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Physics olympicsweek 4
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Physics Olympics

• What is the net force necessary for a 1.6 x 103
  kg automobile to accelerate forward a 2.0 m/s/s?
• Define weight. What is the formula for weight?
• Which one, mass or weight, would change on a
  different planet?
• What is numerical value for acceleration due to
  gravity?
• What is terminal velocity?
• What is Newtons third law of motion?

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Physics Olympics

• Define work.
• What is the formula for work?
• What are the units of work?
• A crane uses an average force of 5200 N to life a
  girder 25m off the ground. How much work does
  the crane do on the girder?

4
Physics Olympics

• Define power.
• What is the formula for power?
• What is the unit for power?
• Using a jack, a mechanic does 5350J of work to
  lift a car 0.5 m in 50 seconds. What is the
  mechanics power output?

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Physics Olympics

• Define mechanical advantage.
• What are the units of mechanical advantage?
• What are the two basic formulas for mechanical
  advantage?
• Calculate the mechanical advantage of a ramp that
  is 6.0 m long and 1.5 m high.

6
Physics Olympics

• List the 6 simple machine.
• Which 3 machines belong in the lever family?
• Which 3 machines belong in the inclined plane
  family?
• How can you tell if a lever is a first, second or
  third class lever?