Answer:
edges
Step-by-step explanation:
For every action you want to record the "Distance", you do not want to find the displacement. 210 feet + 300 feet = 510 feet. His total distance traveled is 510 feet
Displacement however would be -90 = 210 - 300 because he is now -90 feet from where he begun. The reason the 90 is negative is because he is lower now than he was before because the downward movement was greater than the upward movement.
Answer:
12 ways
Step-by-step explanation:
Answer:
No, points A and B lie on the same line, C and B lie on the same line, and A and C lie on the same line so all three points are collinear.
Step-by-step explanation:
If A=B and B=C, then A=C
In other words, they're all on the same line.
9514 1404 393
Answer:
548 W
Step-by-step explanation:
The work done to raise 4 kg to a height of 12 m against gravity is ...
W = Fd = Mgd = (4 kg)(9.8 m/s²)(12 m) = 470.4 J
The power output of the pump doing this work each second is ...
P = (470.4 J)/s = 470.4 watts
Since the pump is only 86% efficient, the power input is ...
Pout = eff × Pin
Pin = Pout/eff
Pin = (470.4 W)/(0.86) ≈ 548 W
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<em>Additional comment</em>
The rating of a motor often has little to do with its actual input power or its ability to do work. The rating is used for purposes such as circuit-breaker and wire sizing, or other aspects of sizing the physical plant surrounding the motor (including piping, in the case of a pump). While we can calculate a value for input power, we cannot make any claim regarding the power rating of the pump.
