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stiv31 [10]
3 years ago
14

A car is traveling 20 meters per second and is brought to rest by applying brakes over a period of 4 seconds. What is the averag

e acceleration over this time interval
Physics
1 answer:
seraphim [82]3 years ago
8 0
It would be 0-20/4 so it’d be -5 meters per second
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Answer:

rotates faster

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A helicopter flies with an air speed of 175 km/h, heading south. The wind is blowing at 85 km/h to the east relative to the grou
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Answer:

154° at 195 km/h

Explanation:

The helicopter is moving south at 175 km/h, relative to the wind.

But the wind is moving east at 85 km/h, relative to the ground.

This means that the helicopter is moving south east relative to the ground.

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This means that we can determine the speed and direction of the helicopter using a right triangle and simple trigonometry.

Refer to the triangle b1.

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x = arctan (\frac{85}{175} ) = 25.9°

Relative to the North, the helicopter is moving at 180° - 25.9° = 154° (rounded to 3 s. f.)

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2 years ago
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the answer to this question perhaps is service

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Learn more about accretion here:

brainly.com/question/17392929

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