A rocket engine obtains forward momentum through the use of fuel additives called <span>fandango additives which is usually contains oxygen. </span>
The answer is c
sound wave produced longitudinal wave
<h2>
<u>How</u><u> </u><u>to</u><u> </u><u>solve</u><u>?</u></h2>
We know that, Velocity is the rate of displacement covered. Displacement is the shortest path between the Initial and Final point covered by the body. So,
- Velocity = Displacement / Time
And, when it comes to Average velocity, It is the total displacement by total time taken. So, By using this let's solve this question.....
<h2>
<u>Solution</u><u>:</u></h2>
✏️ Refer to the attachment...
Let the body goes to point A that is 7 m East of the Initial point. Then it comes backward because West is opposite to East in perpendicular direction. It covers 1.5 m backwards in the same line to reach B which is the Final point.
So,
- Displacement = Final point - Initial point
⇛ Displacement = 7 m - 1.5 m
⇛ Displacement = 5.5 m
Total time taken,
⇛ 2 hours + 1 hour
⇛ 3 hours
Finding Average displacement,
⇛ Total displacement / Total time taken
⇛ 5.5 m / 3 hours
⇛ 1.83333.... hours
So, the Final answer is,
<u>━━━━━━━━━━━━━━━━━━━━</u>
Your calculation of George's <u>SPEED</u> is correct. Nice work !
Velocity is different. Here's how to do velocity:
Velocity = (displacement) / (time)
Displacement = (distance and direction from start-point to end-point)
George ended 500 meters North of where he started. So his displacement is 500 meters North.
Velocity = (500 meters North) / (13 seconds)
Velocity = <em>38.46 m/s North </em>