Answers:
a) 1.224 s
b) -27.2 m/s
c) -37 m/s
Step-by-step explanation:
According to the given information the distance is given by:
(1)
In additio, since the projectile was fired vertically we can use the following equation:
(2)
Where:
is the final velocity
is the initial velocity
is the acceleration due gravity
is the time
Knowing this, let's begin:
a) Find for
Using (2):
(3)
(4)
(5)
(6)
b) Find for
In this case we have to find :
(7)
(8)
c) Find for
(9)
(10)
<u>Conclusions:</u>
The time we found in a) when is at the maximum height of the projectile, just before going down. That is why in parts b) and c) when time is and the velocity is negative, because it is directed downwards.
Answer:
There are a lot of possible answers to this question. One would just be
first blank: 8
second blank: 4
Third blank: 1
Step-by-step explanation:
Basically mix and match numbers that would give you the same answer.
some other combinations:
9,0,1
7,8,1
6,12,1
5,16,1
4,20,1
3,24,1
2,28,1
1,32,1
( I think you could see a pattern here). If you want to change the last number, all you need to do is take some from the first blank
2 OVER 8 AND 4 OVER 16 AND 1 FOURTH
When two linear equations have only one solution the two lines on a graph would intersect each other ( they would only touch in one spot).
Isolate the x. Subtract 4x from both sides, and add 2 to both sides
2x (-4x) - 2 (+2) > 4x (-4x) + 6 (+2)
2x - 4x > 6 + 2
Simplify. Combine like terms
-2x > 8
Isolate the x. Divide -2 from both sides. Note that you are <em>dividing a negative number</em>. When doing so, flip the sign.
-2x/-2 > 8/-2
x > 8/-2
x < -4
x < -4, or (1) is your answer
hope this helps