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3 years ago

What is initial velocity?

Physics

1 answer:

LUCKY_DIMON [66]3 years ago

8 0

Initial velocity is when the motion starts.

Explanation:

Initial velocity is is the velocity at time interval t = 0 is represented by u.

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At its closest approach, a moon comes within 200,000 km of the planet it orbits. At that point, the moon is 300,000 km from the

krok68 [10]

Answer:

s₁ = 240,000 km

Explanation:

The distance between both the focuses f₁ and f₂ will be the sum of distances of the moon from each focus at a given point. Therefore,

s = s₁ + s₂

where,

s = total distance between the focuses = ?

s₁ = distance between f1 and moon = 200,000 km

s₂ = distance between f₂ and moon = 300,000 km

Therefore,

s = 200,000 km + 300,000 km

s = 500,000 km

Now, when the distance from f₂ becomes 260,000 km, then the distance from f₁(planet) will become:

s = s₁ + s₂

500,000 km = s₁ + 260,000 km

s₁ = 500,000 km - 260,000 km

s₁ = 240,000 km

5 0

3 years ago

What is a concave lens?

ozzi

A concave lens is a lens that has at least one of its surfaces or both surfaces curved inwards. Due to this reason, this lens diverges the light that falls on it and hence is also called a diverging lens. The concave lens is thinner in the middle compared to its edges. These are used in flashlights, binoculars, telescopes, etc.
Please see attached image for reference.

5 0

3 years ago

Write a scientific question that is specific and testable. Jack and Jill when up a hill to fetch a pail of water. Once they got

Naya [18.7K]

The scientific method consists of making an observation, ask a question, formulate hypothesis, predict, test, iterate

The scientific question that can be asked is; What is the depth of the well

The reason why the above question is appropriate is as follows:

The items Jack and Jill found at the well

No pail

A stopwatch

Nine equal sized rocks

The information they can get using what they found are;

The time it takes the rock to reach the water surface in the well

The depth of the well

The well's depth, h, is given using the equation of free fall, as follows;

$h = \dfrac{1}{2} \cdot g \cdot t^2$

Where;

g ≈ Acceleration due to gravity ≈ 9.81 m/s²

By recording the time each rock takes to reach the water surface in the well, the average depth of the well, $h_{ave}$ , can be found by finding the average of the 9 calculated values for h using the 9 stones

Therefore;

The scientific question that is specific and testable is how deep is the well, or what is the well's depth

Learn more about scientific method here:

brainly.com/question/13096299

3 0

3 years ago

What are some indicators that a chemical reaction is occurring? Check all that apply.

Paul [167]

The formation of bubbles, a change in color, and the formation of a precipitate (1, 3, & 5) are all indicators that a chemical reaction is occurring.

6 0

3 years ago

Read 2 more answers

Two asteroids in outer space collide, and stick together. The mass of each asteroid, and the velocity of each asteroid before th

Naddik [55]

Answer: (2) Use the Momentum Principle.

Explanation:

In fact, it is called the Conservation of linear momentum principle, which establishes the initial momentum $p_{i}$ of the asteroids before the collision must be equal to the final momentum $p_{f}$ after the collision, no matter if the collision was elastic or inelastic (in which the kinetic energy is not conserved).

In this sense, the linear momentum $p$ of a body is defined as:

$p=mV$

Where $m$ is the mass and $V$ the velocity.

Therefore, the useful approach in this situation is option (2).

7 0

3 years ago

What is initial velocity?​

What is initial velocity?