Find the resultant (magnitude and direction) of these forces: 300 N at 00 and 400 N...

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Physics

  1. Find the resultant (magnitude and direction) of theseforces: 300 N at 00 and 400 N at1500.
  2. After falling from a cliff that is 100 m high, a 30 kg rockhits the ground below. Neglecting air resistance, how fast was itmoving just as it hit?
  3. How much heat will it take to completely melt 2 kg of lead thatis at 2270 C?
  4. What is the mutual attractive gravitational force between twopeople, each with a mass of 60 kg standing 2 m apart?
  5. A wheel rotates at 24 revolutions every 3 minutes. This isequivalent to A) 16π rad/s    B) 50.2rad/s    C) 0.837rad/s          D) 1.19rad/s

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