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zaharov [31]
3 years ago
10

Both cars start from the same point. Which describes the motion shown?

Physics
2 answers:
Alekssandra [29.7K]3 years ago
8 0
C) The longer the line, the greater the magnitude of the vector. As for the direction, just think of a compass.




timama [110]3 years ago
7 0

C: one car travels south at 4 m/s. The other car travels east at 2 m/s

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A 3250-kg aircraft takes 12.5 min to achieve its cruising
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Answer:

effeciency n = = 49%

Explanation:

given data:

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time = 12.5 min

h = 10 km = 10,000 m

v =85 km/h = 236.11 m/s

n = \frac{P_0}{P}

P_o = \frac{total\ energy}{t} = \frac{ kinetic \energy + gravitational\ energy}{t}

kinetic energy= \frac{1}{2} mv^2  =\frac{1}{2} 3250* 236 = 90590389.66 kg m^2/s^2

kinetic energy = 90590389.66 kg m^2/s^2

gravitational energy = mgh = 3250*9.8*10000 = 315500000.00  kg m^2/s^2

total energy = 90590389.66 +315500000.00 = 409091242.28 kg m^2/s^2

P_o =\frac{409091242.28}{750} = 545454.99 j/s

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effeciency n = = 49%

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