On the Moon, acceleration resulting from gravity, g, is about 5.3 ft/s2. Which expression gives the time, in seconds, it would take a dropped penny to fall 100 ft on the Moon?
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On the Moon, acceleration resulting from gravity, g, is about 5.3 ft/s2. Which expression gives the time, in seconds, it would take a dropped penny to fall 100 ft on the Moon?
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Step-by-step explanation:
given
g= 5.3 ft/s², u=0 , h= 100ft, t = ?
since , h= ut+(1/2) gt²
h= (1/2)gt²
=> t = √(2h/g)
=> t = √(2h/5.3)
this is the expression for time t.
solution:-
100 = 0×t+(1/2)t²
=> t² = 200
=> t = 10√2 seconds
hope this helps you