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Sagot :
Answer:
B
Explanation:
[tex] s= \frac{1}{2} gt ^{2} [/tex]
s=0.75
g=10
Answer:
0.39 seconds
Explanation:
Given:
Distance, S = 0.75 m
Acceleration due to gravity, g = 9.81 m/s^2
Initial (vertical) velocity, u = 0 m/s
Final velocity,
S = ut + (1/2)gt^2
0.75 = 0(t) + (1/2)(9.81)t^2
t^2 = 0.75/(9.81/2) = 0.1529 s^2
t = sqrt(0.1529) s.
= 0.391 s.
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