Physics Review QuestionUnit:
MechanicsYear:
1994 Question#:
6Question:
A rock falls freely from rest near the surface of a planet where the acceleration
due to gravity is 4.0 meters per second^{2}. What is the speed of this rock after it falls 32 meters?(1 ) 8.0 m/s (2 ) 16 m/s (3 ) 25 m/s (4 ) 32 m/s What is this question really asking? Explanation by: Maria K [ Return to question menu ] Answer 1
8.0 m/s INCORRECT given: v intial = 0m/s a = 4.0 m/s ^{2} s = 32 m find : v final
try using
return to top Answer 2
16 m/s CORRECT given: v intial = 0m/s a = 4.0 m/s ^{2} s = 32 m find : v final
you used correctly.
return to top Answer 3
25 m/s INCORRECT given: v intial = 0m/s a = 4.0 m/s ^{2} s = 32 m find : v final
try using
return to top Answer 4
32 m/s INCORRECT given: v intial = 0m/s a = 4.0 m/s ^{2} s = 32 m find : v final
try using
return to top What's this question really asking?
What's the final velocity of the rock? return to top |

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