Answer:
c)
Step-by-step explanation:
Use 49 instead of 14 for 7²
Reason: 7² = 7 * 7 = 49
Not 14 as 7*2 = 14
Answer:
11/8
Step-by-step explanation:
Simplify 11/4 = 2 3/4
half of 2 = 1
half of 3/4 = 3/8
1 3/8 changed to an inproper fraction = 11/8
0 is the starting pointing for equations that are for positive numbers. 0 sets an easy way to figure out problems that have negatives. 0 is important to solve any problem with integers, and decimals!
we know that
The scalar magnitude of the velocity vector is the speed. The speed is equal to
![Speed=\frac{distance}{time}](https://tex.z-dn.net/?f=Speed%3D%5Cfrac%7Bdistance%7D%7Btime%7D)
in this problem we have
![distance=400\ m \\time=120\ sec](https://tex.z-dn.net/?f=distance%3D400%5C%20m%20%5C%5Ctime%3D120%5C%20sec)
substitute in the formula
![Speed=\frac{400}{120}](https://tex.z-dn.net/?f=Speed%3D%5Cfrac%7B400%7D%7B120%7D)
![Speed=3.5\frac{m}{sec}](https://tex.z-dn.net/?f=Speed%3D3.5%5Cfrac%7Bm%7D%7Bsec%7D)
therefore
<u>the answer Part a) is</u>
the speed is equal to ![3.5\frac{m}{sec}](https://tex.z-dn.net/?f=3.5%5Cfrac%7Bm%7D%7Bsec%7D)
<u>Part b) </u>Find the velocity
we know that
<u>Velocity </u>is a vector quantity; both magnitude and direction are needed to define it
in this problem we have
the magnitude is equal to the speed
![magnitude=3.5\frac{m}{sec}](https://tex.z-dn.net/?f=magnitude%3D3.5%5Cfrac%7Bm%7D%7Bsec%7D)
![direction=North\ East\ (NE)](https://tex.z-dn.net/?f=direction%3DNorth%5C%20East%5C%20%28NE%29)
therefore
<u>the answer Part b) is</u>
the velocity is ![3.5\frac{m}{sec}\ North\ East\ (NE)](https://tex.z-dn.net/?f=3.5%5Cfrac%7Bm%7D%7Bsec%7D%5C%20North%5C%20East%5C%20%28NE%29)
Part c)
we know that
the acceleration is equal to the formula
![a=\frac{V2-V1}{t2-t1}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7BV2-V1%7D%7Bt2-t1%7D)
in this problem we have
![V2=0 \\V1=3.5\frac{m}{sec}](https://tex.z-dn.net/?f=V2%3D0%20%5C%5CV1%3D3.5%5Cfrac%7Bm%7D%7Bsec%7D)
![t2=15\ sec\\t1=0](https://tex.z-dn.net/?f=t2%3D15%5C%20sec%5C%5Ct1%3D0)
substitute in the formula
![a=\frac{0-3.5}{15-0}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7B0-3.5%7D%7B15-0%7D)
![a=-\frac{3.5}{15}\frac{m}{sec^{2}}](https://tex.z-dn.net/?f=a%3D-%5Cfrac%7B3.5%7D%7B15%7D%5Cfrac%7Bm%7D%7Bsec%5E%7B2%7D%7D)
![a=-\frac{7}{30}\frac{m}{sec^{2}}](https://tex.z-dn.net/?f=a%3D-%5Cfrac%7B7%7D%7B30%7D%5Cfrac%7Bm%7D%7Bsec%5E%7B2%7D%7D)
therefore
<u>the answer Part c) is</u>
the acceleration is ![-\frac{7}{30}\frac{m}{sec^{2}}](https://tex.z-dn.net/?f=-%5Cfrac%7B7%7D%7B30%7D%5Cfrac%7Bm%7D%7Bsec%5E%7B2%7D%7D)
This is an example of negative acceleration
Answer:
if its volume you are looking for.....?
l X w X h
3 X 5 X 5 = 75 cubed