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Author Question: Two automobiles traveling at right angles to each other collide and stick together. Car A has a mass ... (Read 128 times)

burchfield96

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on: Jul 29, 2018
Two automobiles traveling at right angles to each other collide and stick together. Car A has a mass of 1200 kg and had a speed of 25 m/s before the collision.
 
  Car B has a mass of 1600 kg. The skid marks show that, immediately after the collision, the wreckage was moving in a direction making an angle of 40 with the original direction of car A. What was the speed of car B before the collision?
  A)
 
  16 m/s
 
  B)
 
  18 m/s
 
  C)
 
  11 m/s
 
  D)
 
  21 m/s
 
  E)
 
  14 m/s

Question 2

How many different kinds of leptons are known to exist, including antiparticles as different kinds?
 
  A) 12 B) 4 C) 2 D) 8 E) 6


Toya9913

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


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burchfield96

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Reply #2 on: Jul 29, 2018
Thank you!


Toya9913

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Reply #3 on: Jul 29, 2018
Always glad to help...


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