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8090 [49]
3 years ago
5

Write a linear equation for the information given below.

Mathematics
1 answer:
suter [353]3 years ago
8 0

Answer:

below

Step-by-step explanation:

that is the procedure above

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A steel ball is dropped from a building’s roof and passes a window, taking 0.125 s to fall from the top to the bottom of the win
Anna35 [415]

Answer:

20.425 m

Step-by-step explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

s=ut+\frac{1}{2}at^2\\\Rightarrow u=\frac{s-\frac{1}{2}at^2}{t}\\\Rightarrow u=\frac{1.2-\frac{1}{2}\times 9.81\times 0.125^2}{0.125}\\\Rightarrow u=8.98\ m/s

Now this will the final velocity when it reaches the top of the window

v^2-u^2=2as\\\Rightarrow s=\frac{v^2-u^2}{2a}\\\Rightarrow s=\frac{8.98^2-0^2}{2\times 9.81}\\\Rightarrow s=4.11\ m

v=u+at\\\Rightarrow v=8.98+9.81\times 0.125\\\Rightarrow v=10.21\ m/s

If the upward flight is an exact reverse of the downward flight then the time taken while going down will be 1 second and going up will be 1 second.

s=ut+\frac{1}{2}at^2\\\Rightarrow s=10.21\times 1+\frac{1}{2}\times 9.81\times 1^2\\\Rightarrow s=15.115\ m

Hence total height of the building is 4.11+1.2+15.115 = 20.425 m

4 0
3 years ago
Food bill:$55 sales tax:8 tip:10%
Romashka [77]

Answer:

$65.34

Step-by-step explanation:

Multiply $55 by 0.08. Then multiply $55 by 0.1. Then add the two.

4 0
3 years ago
What is the length of the hypotenuse of a right triangle is each of the 2 legs is 7 units
valina [46]
Using a^2+b^2=c^2
7^2 +7^2=c^2
49+49= c^2
c^2= 98
c= the square root of 98
8 0
3 years ago
Find m∠H. Put the answer below.<br> m∠H =
max2010maxim [7]

Answer:

30 degrees

Step-by-step explanation:

This is the third time I am answering the same question asked by you.

5 0
2 years ago
7) Explain how to divide $53.56 by 10 WITHOUT USING A CALCULATOR
Sophie [7]

Answer: Okay first think back you surely have divided whole numbers by 10 it is the same with decimals for each 0 in the thing you are dividing it by you move the dot one to the left. So if you divide it by 10 it is 5.356 by 100 it would be 0.5356.

Hence the answer is 5.356.

Step-by-step explanation:

Hope it helps

4 0
3 years ago
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