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liq [111]
3 years ago
11

amy and ellie left school at the same time amy lives farther away then ellie but she and ellie arrived at theure homes at the sa

me time compare the girls speed
Physics
1 answer:
velikii [3]3 years ago
8 0

Army and Ellie left school at the same time.

Army lives farther than Ellie.

They arrived at their homes at the same time.

This means that Army travels faster than Ellie.

Time \frac{distance}{speed}

Since the time is constant here, increasing the distance directly increases the speed.

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3 years ago
To push a 26.0 kg crate up a frictionless incline, angled at 25.0° to the horizontal, a worker exerts a force of 209 N parallel
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Answer:

(a) W = +397.1 J

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Problem development

(a) Work performed by the worker's applied force on the box .

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(b) Work performed by the gravitational force on the crate

We calculate the weight component parallel to the displacement of the box:

We define the x-axis in the direction of the inclined plane ,25.0° to the horizontal.

We define the y-axis and in the direction of the plane perpendicular to the inclined plane.

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(c) Work performed by normal force (N) exerted by the incline on the crate

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