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Rama09 [41]
3 years ago
5

Does a car that is slowing down always have a negative acceleration explain

Physics
1 answer:
Zina [86]3 years ago
4 0
No, because sometimes you have to stop at stop signs and stop lights.
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A tumble buggy travels on the ground for 8 seconds and travels 4 meters. What<br> was its speed?
boyakko [2]

Answer:

32 mph

Explanation:

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3 years ago
The door handles are kept near the edges of door planks​
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Uh what’s the question
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When you are on a roller coaster, you are constantly transforming from Potential to Kinetic energy and back. Explain how these e
andreev551 [17]

Answer:

The two types of energy possessed by the roller coaster are:

- Potential energy: it is the energy possessed by the roller coaster due to its position. It is calculated as

PE=mgh

where

m is the mass of the roller coaster

g is the acceleration due to gravity

h is the height of the roller coaster relative to the ground

- KInetic energy: it is the energy possessed by the roller coaster due to its motion. It is calculated as

KE=\frac{1}{2}mv^2

where

v is the speed of the roller coaster

Moreover, according to the law of conservation of energy, the total mechanical energy of the roller coaster (the sum of potential+kinetic energy) is constant during the motion:

E=PE+KE=const.

This implies that:

- When PE increases (because h increases), KE decreases (because v decreases)

- When PE decreases (because h decreases), KE increases (because v increases)

Now we can apply these conclusions to the motion of the roller coaster:

- When it moves from A to B, potential energy is converted into kinetic energy, so PE decreases and KE increases

- When it moves from B to C, kinetic energy is converted into potential energy, so PE increases and KE decreases

- When it moves from C to D, potential energy is converted into kinetic energy, so PE decreases and KE increases

- When it moves from D to E,  kinetic energy is converted into potential energy, so PE increases and KE decreases

8 0
3 years ago
The towel has better blank
koban [17]

Answer:

D

Explanation:

Towels Absorb

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Describe the Pascal's principles​
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Explanation:

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3 years ago
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