The formula for final velocity is Speed= distance/time (s=d/t)
Velocity is another word for speed.
Answer:
Parallel circuits are used in homes because the loads can be operated independently of each other. That means that you can have an electrical item turned on and running without needing to have all of the other loads on and running as well.
<h2>
a) Displacement of penny = 1300 i + 2400 j - 640 k</h2><h2>b) Magnitude of his displacement = 2729.47 m</h2>
Explanation:
a) He walks 1300 m east, 2400 m north, and then drops the penny from a cliff 640 m high.
1300 m east = 1300 i
2400 m north = 2400 j
Drops the penny from a cliff 640 m high = -640 k
Displacement of penny = 1300 i + 2400 j - 640 k
b) Displacement of man for return trip = -1300 i - 2400 j
![\texttt{Magnitude = }\sqrt{(-1300)^2+(-2400)^2}=2729.47m](https://tex.z-dn.net/?f=%5Ctexttt%7BMagnitude%20%3D%20%7D%5Csqrt%7B%28-1300%29%5E2%2B%28-2400%29%5E2%7D%3D2729.47m)
Magnitude of his displacement = 2729.47 m
speed = distance/time
= 150/18
= 8.33 m/sec
hope this helps :)
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