Author Question: A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The ... (Read 121 times)

Marty

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A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together.
 
  (a) What is the speed of the wreckage just after the collision? (b) In what direction does the wreckage move just after the collision?

Question 2

Four point charges, each of charge 2.5 x 10-5, are located on the x- and y-axes, one at each of the locations (0, 2.0 m), (0, -2.0 m), (2.0 m, 0), and (-2.0 m, 0). The potential at the origin is
 
  A)
 
  2.3  105 V.
  B)
 
  4.5  105 V.
  C)
 
  3.5  105 V.
  D)
 
  1.1  105 V.
  E)
 
  0.


chreslie

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Answer to Question 1

(a) 12.2 m/s
(b) 48.0 N of E

Answer to Question 2

B



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