madiballet125
30.08.2019 •
Physics
What is the velocity of an object that has been in free fall for 1.5s?
a. 150 m/s downward
b. 6.5 m/s downward
c. -6.5 m/s downward
d. 15 m/s downward
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Ответ:
D. 15 m/s downward
Explanation:
v = at + v₀
v = (-9.8 m/s²) (1.5 s) + (0 m/s)
v = -14.7 m/s
Rounded to two significant figures, the answer is D, 15 m/s downward.
Ответ:
It would react with nonmetals to form a salt and water
Explanation: