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A basketball player jumped straight up to grab a rebound. If she was in the air for 0.80 second, how high did she jump? A) 3.1 m B) 0.78 m C) 1.2 m D) 0.50 m
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A basketball player jumped straight up to grab a rebound. If she was in the air for 0.80 second, how high did she jump? A) 3.1 m B) 0.78 m C) 1.2 m D) 0.50 m
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Sep 19, 2018
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A basketball player jumped straight up to grab a rebound. If she was in the air for 0.80 second, how high did she jump?
A) 3.1 m
B) 0.78 m
C) 1.2 m
D) 0.50 m
Physics
high-school
Kyle Burriss
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after 0.40 seconds, she must have reached her max height
she spends half the time going up and the other half falling down
t = 0.40
vf = 0
a = -9.8
y = vf t - 1/2 a t^2
y = 0 - 1/2 (-9.8) (0.4)^2
y = 4.9 (0.4)^2
Y=0.784
This will be your answer.
Shati
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Sep 22, 2018
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Shati
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-- She went up for 0.4 sec and down for 0.4 sec.
-- The vertical distance traveled in gravity during ' t ' seconds is
D = (1/2) x (g) x (t)²
= (1/2) (9.8 m/s²) (0.4 sec)²
= (4.9 m/s²) x (0.16 s²)
=
0.784 meter
( B )
JatinS
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Sep 24, 2018
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JatinS
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