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Naya [18.7K]
3 years ago
7

A train moving west with an initial velocity of 20 m/s accelerates at 4 m/s2 for 10 seconds. During this time, the train moves a

distance of how many meters.
Mathematics
1 answer:
aleksklad [387]3 years ago
7 0
24 but i could be wrong

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Three forces of 300 N in the direction of N30E, 400N in the direction of N60E and
andreyandreev [35.5K]

Split up each force into horizontal and vertical components.

• 300 N at N30°E :

(300 N) (cos(30°) i + sin(30°) j)

• 400 N at N60°E :

(400 N) (cos(60°) i + sin(60°) j)

• 500 N at N80°E :

(500 N) (cos(80°) i + sin(80°) j)

The resultant force is the sum of these forces,

∑ F = (300 cos(30°) + 400 cos(60°) + 500 cos(80°)) i

… … …  + (300 sin(30°) + 400 sin(60°) + 500 sin(80°)) j N

∑ F ≈ (546.632 i + 988.814 j) N

so ∑ F has a magnitude of approximately 1129.85 N and points in the direction of approximately N61.0655°E.

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2 years ago
Simplify the radical expression. Please explain how you got your answer.<br><br> √25/4
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3 years ago
Ashley is making $500 a week at her job . She receives a 20 percent pay raise. A year later she takes a 5 percent cut. How much
MaRussiya [10]

Answer:

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6 sides so a hexagon
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Answer:

Step-by-step explanation:

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