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posted by  Pritzy on 6/4/2008 1:52:55 PM  |  status: Live  

Physical Science Question. Please Help me!

Course Textbook Chapter Problem
N/A The Physical Universe, 12th Edition Konrad B. Krauskopf Arthur Beiser 3 2,8,
Question Details:
2.)An object at rest may have?
a. velocity
b. momentum
c. kinetic energy
d. potential energy
 
Which one?
 
 8.) A bomb dropped from an airplane explodes in midair.
 
a. Its total kinetic energy increases
b. Its total kinetic energy decreases
c.Its total momentum increases
d. Its total momentum dercreases
 
Which one is right?
 
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posted by brownkid on 6/4/2008 10:14:48 PM  |  status: Live
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Pritzy's comment:
"Thanks so much"
Response Details:
2.d
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posted by brownkid on 6/4/2008 10:15:24 PM  |  status: Live
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Response Details:
8 is weird it could be a or c cuz there is an increase in velocity.
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posted by Bpanda on 6/4/2008 11:24:12 PM  |  status: Live
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Response Details:
2)
 
the answer is d).
 
for all the other cases , movement is involved
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