Difference between revisions of "03.2"

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(Fun Physics Stuff!!)
(Problem One)
 
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===Problem One===
 
===Problem One===
1. How high is the cliff? (11.9 m)
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How high is the cliff? (11.9 m)
  
 
   
 
   
  
 
   
 
   
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===Problem Two===
  
2. How far from the base of the cliff does the ball land? (27.0 m)
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How far from the base of the cliff does the ball land? (27.0 m)
  
 
   
 
   
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3. What is the speed of impact? (23.1 m/s)  
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===Problem Three===
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What is the speed of impact? (23.1 m/s)  
 
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  Horizontal
 
  Horizontal

Latest revision as of 21:01, 14 January 2010

A ball rolls off the edge of a cliff. The instant it leaves the edge, it has an initial horizontal velocity of 17.3 m/s, and it strikes the ground after 1.56 seconds.

Problem One

How high is the cliff? (11.9 m)



Problem Two

How far from the base of the cliff does the ball land? (27.0 m)




Problem Three

What is the speed of impact? (23.1 m/s)



Horizontal

s u = 17.3 m/s v a = 0 (horizontally) t = 1.56 s



 Vertical

s u = 0 (purely horizontal) v a = -9.81 m/s/s (on earth) t = 1.56 s