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anonymous
 one year ago
A particle in freefall:
a) takes 42 seconds to travel 490 meters at g=9.8 m/s2
B) takes 15.8 seconds to travel 490 meters at g= 9.8 m/s2
C) takes 4.5 seconds to travel 490 meters at g= 9.8 m/s2
D) takes 10 seconds to travel 490 meters at g= 9.8 m/s2
anonymous
 one year ago
A particle in freefall: a) takes 42 seconds to travel 490 meters at g=9.8 m/s2 B) takes 15.8 seconds to travel 490 meters at g= 9.8 m/s2 C) takes 4.5 seconds to travel 490 meters at g= 9.8 m/s2 D) takes 10 seconds to travel 490 meters at g= 9.8 m/s2

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shamim
 one year ago
Best ResponseYou've already chosen the best response.1Given u=0 h=490m g=9.8m/s^2 t=?

shamim
 one year ago
Best ResponseYou've already chosen the best response.1Can u tell me the right option?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Vf = Vi + at you know everything except t. solve for t.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry, also use vf^2  vi^2 = 2aX

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the answer is not B...its 9.9 sec so its D
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