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24.07.2019 •
Mathematics
Afly undergoes a displacement of -5.80m while accelerating at -1.33m/s^2 for 4.22s. what was the initial velocity of the fly
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Ответ:
3.94ms-¹
Step-by-step explanation:
s=-5.80, a=-1.33ms-², t=4.22s, u=?(where u is initial velocity)
v=displacement/time
v=s/t
v=-5.80/4.22
v=-1.37ms-¹
using this equation of motion
v=u+at
-1.37=u +(-1.33) x 4.22
making u the subject of the formula
u=v-at
u= -1.37 -(-1.33) x 4.22
u= -1.37 +1.33 x 4.22
u= -1.37+5.61
u= 3.94ms-¹
Ответ:
37.69 (≈ 38 ft²)
Step-by-step explanation:
2πr = 30.77
r = 30.77 / (2 * 3.14) = 4.9
half of free-throw circle area: πr² / 2 = (3.14 * 4.9²) / 2 = 37.69 (≈ 38 ft²)