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3 years ago

Four balls with different masses are dropped simultaneously from the heights

Physics

1 answer:

Scorpion4ik [409]3 years ago

7 0

D will hit last because if air resistance is null then the only force enacting on the balls is the force of gravity. Force of Gravity has an acceleration of 9.81 ms^2 and so every ball had the same acceleration and ball D is the furthest away from the floor.

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The blue mass is currently 4 meters away from the red mass.

umka21 [38]

Answer:

its a!

Explanation:

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3 years ago

Momentum is usually not exactly conserved in a real world demonstration of momentum conservation. What is a possible reason for

Maksim231197 [3]

Answer:

For any collision occurring in an isolated system, momentum is conserved. The total amount of momentum of the collection of objects in the system is the same before the collision as after the collision.

Explanation:

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3 years ago

A speed-time graph is shown below:

alexandr1967 [171]

Answer:

<em>The average acceleration of the object is 0.5 cm/s^2</em>. Answer: A)

Explanation:

<u>Average Acceleration</u>

The average acceleration of a moving object is the rate at which the speed changed over time in a specific period. It can be calculated as follows:

$\displaystyle \bar a=\frac{v_f-v_o}{t}$

Where vf is the final speed, vo is the initial speed and t is the time.

The speed-time shows the speed starts at 0 cm/s and ends at 4 cm/s over the 8 seconds period. The average acceleration is:

$\displaystyle \bar a=\frac{4-0}{8}=0.5$

The average acceleration is 0.5 cm/s^2

A) Correct. The average acceleration is 0.5 cm/s^2

B) Incorrect. The average acceleration is 0.5 cm/s^2

C) Incorrect. The average acceleration is 0.5 cm/s^2

D) Incorrect. The average acceleration is 0.5 cm/s^2

3 0

3 years ago

Mr. Jones starts from rest and begins to accelerate straight to the bathroom at a rate of 0.5 m/s for 10 seconds. What kind of m

Xelga [282]

Answer:

A. linear

Explanation:

because they are going in a straight line

5 0

3 years ago

Charge q is 1 unit of distance away from the source charge S. Charge p is four times further away. The force exerted between S a

zhenek [66]

The correct answer is:

sixteen times

In fact, the distance between charge q and the source S is 1 unit. Instead, the distance between charge p and the source S is 4 units. The magnitude of the electrostatic force is inversely proportional to the square of the distance between the charge and the source:

$E \sim \frac{1}{r^2}$

where r is the distance. If we take the force between q and S as reference, we have r=1, so that

$E_{qS}=\frac{1}{1^2}=1$

while the force between p and S is

$E_{pS}=\frac{1}{4^2}=\frac{1}{16}$

Therefore, we see that the force exerted between q and S is 16 times the force exerted between p and S.

4 0

3 years ago

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