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Yazminwilliams2504
29.07.2021 •
Mathematics
When an object falls freely, the formula for the distance it falls is d= 4.9t^2 where d is
the distance, in metres, and t is time, in seconds.
a) After 5 seconds, how far does an object fall, in metres?
b) How many seconds does it take to fall 490 m?
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Ответ:
a) 122.5 m ; b) 10 s
Step-by-step explanation:
Just use the given equation and plug in what you know.
a)
d = 4.9t^2
d = 4.9(5^2)
d = 4.9 * 25
d = 122.5 m
b)
d = 4.9t^2
490 = 4.9t^2
100 = t^2
t = 10 s
Ответ:
a) 122.5 meters
b) 10 seconds
Step-by-step explanation:
Ответ:
c.24
Step-by-step explanation:
First find the correlation between 55-33 and 50-30 since the triangles are similar these sides have the same correlation of 1 2/3
divide 50 by30 and 55by 33 to prove my statement.
After that you multiply the correlation by the final side 36time 1 2/3 to get almost exactly 60 subtract 36 from 60 and get 24.