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allsm [11]
3 years ago
11

If you drop a silver dollar off a building and it hits the ground in 10 seconds, how fast was the coin going just before?

Physics
1 answer:
Ksju [112]3 years ago
3 0
V = u + at 
<span>= 0 + (9.81)(10) </span>
<span>= 98.1m/s </span>

<span>Ignoring air resistance.</span>
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Which describes an object in projectile motion? Check all that apply.
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Answer:

Gravity acts to pull the object down.

The object’s inertia carries it forward.

The path of the object is curved.

Explanation:

The motion of a projectile consists of two separate motions:

- A uniform motion along the horizontal direction, where the velocity is constant; since there are no forces along this direction, the velocity does not change, and so the object continues its motion for inertia --> so, the statement  "The object’s inertia carries it forward" is true.

- A uniformly accelerated motion along the vertical direction, with a constant downward acceleration (g=9.8 m/s^2, acceleration due to gravity). So, the vertical velocity changes, due to the presence of the gravity that acts to pull the object down.

- As a result of the combination of these two motions, the object follows a curved path (in particular, it is a parabolic path).

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2 years ago
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NNADVOKAT [17]

Answer;

-it will move away from the large ball because like charges repel.

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When small, positively charged ball is moved close to a large, positively charged ball it would be pushed away from the large positively charged ball since they are both positively charged. One has to put in energy to try to move the small ball closer to the large ball. The closer one try to move it to the large ball, the more energy one has to put in, so the more electrical potential energy the small ball would have.

6 0
3 years ago
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In a closed energy system, energy is?​
Alisiya [41]

Answer:

Explanation:

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Hope this helped you!

3 0
2 years ago
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Answer:

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Image is real and inverted and 16.6 / 54.2 * 6 = 1.94 cm tall

7 0
3 years ago
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