Taking right movement to be positive means leftward movement is negative.
Hence we have a deceleration of
![a = - 2.5 {ms}^{ - 2}](https://tex.z-dn.net/?f=a%20%3D%20-%202.5%20%7Bms%7D%5E%7B%20-%202%7D%20)
![t = 4s](https://tex.z-dn.net/?f=t%20%3D%204s)
![v = 3.0 {ms}^{ - 1}](https://tex.z-dn.net/?f=v%20%3D%203.0%20%7Bms%7D%5E%7B%20-%201%7D%20)
Using this 'suvat' equation
![v = u + at](https://tex.z-dn.net/?f=v%20%3D%20u%20%2B%20at)
we can determine the initial velocity
![3.0= u + -2.5(4)](https://tex.z-dn.net/?f=3.0%3D%20u%20%2B%20-2.5%284%29)
![3.0+2.5(4)=u](https://tex.z-dn.net/?f=3.0%2B2.5%284%29%3Du)
![13.0 = u](https://tex.z-dn.net/?f=13.0%20%3D%20u%20)
Hence the initial velocity is 13.0 meters per seconds
Answer:
.
Explanation:
Distance Skylar traveled North is ![50\ \text{meters}](https://tex.z-dn.net/?f=50%5C%20%5Ctext%7Bmeters%7D)
Then she traveled
Westward.
After which she traveled
towards the South.
The total distance traveled would be the sum of the distances.
![50+30+20=100\ \text{meters}](https://tex.z-dn.net/?f=50%2B30%2B20%3D100%5C%20%5Ctext%7Bmeters%7D)
The distance traveled by Skylar was is
.
<span>a. KE in electron volts is 1020 eV.
b. KE in Joules is e(1020) = (1.6022E-19)(1020) = 1.634E-16
c. KE = (1/2)mv^2, so v = sqrt[2*KE/m] = 18.94E6 m/s
note: m is the mass of an electron = 9.109e-31 kg
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
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The closer you are to the ground the more accurate you'll be. That's why most snipers are in the "prone" position.