To solve for the time an object takes to hit the ground, the equation
<em>y</em> <em>= y₀ + v₀t + ½gt²</em>, or just <em>0 = y₀ +½gt²</em> since there is no initial velocity and the final y position is 0 (since it is on the ground). Therefore, <em>t = (−2y₀/g)^½.</em>
(-2*60/-9.8)^½ = 3.50 seconds.
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<h3>✒️ACCELERATION</h3>
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Calculate the acceleration of riding her bicycle in a straight line that speeds up from 4 m/s to 12 m/s in 10 seconds.
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Here we have a given of,

Because acceleration has a direction <u>(</u><u>riding her bicycle in a straight line</u><u>)</u>, it is important to always subtract the final velocity represented as
from your initial velocity also represented as
.
Now 'Work it out' and solve for Acceleration of riding her bicycle using the given formula.
Hence, The total acceleration of the girl riding her bicycle is 0.8 meters per second squared (m/s²).
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૮₍´˶• . • ⑅ ₎ა
I think the answer you’re looking for is
B. 9
-I hope this helps!
Answer:
8,136
Step-by-step explanation:
Add all of the numbers together