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evablogger [386]
3 years ago
15

Which of the following represents a case in which you are not accelerating? -Driving 60 miles per hour around a curve -Going fro

m 0 to 60 miles per hour in 10 seconds -Slamming on the brakes to come to a stop at a stop sign -Driving in a straight line at 60 miles per hour
Physics
1 answer:
PIT_PIT [208]3 years ago
8 0

Answer:

Driving in a straight line at 60 miles per hour

Explanation:

In the first case there's an acceleration that modifies the direction of the movement.

In the second case there's a lineal acceleration that increases the speed of the car.

in the third case there's a negative acceleration that reduces the speed of the car.

On the third case the speed is constant so the acceleration is 0 mi/s^2

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Answer:

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Explanation:

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Hope it helped

3 0
2 years ago
If a weightlifter lifts a 286 kg mass 0.25 meters above his head, how much PEg does the mass have?
vazorg [7]

Answer:

Change in potential energy is 700.7 J.

Explanation:

Given:

Mass of the object is, m=286 kg

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Acceleration due to gravity is, g=9.8 m/s²

We know that for a mass m raised to a height h, the change in potential energy is given as:

\Delta PE=mgh, where, \Delta PE\rightarrow \textrm{Change in Potential Energy}

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\Delta PE=286\times 9.8\times 0.25=700.7\textrm{ J}

Therefore, the change in the potential energy is 700.7 J.

3 0
3 years ago
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