Help!6. Assume a position vs time graph displays a horizontal line, what does this represent?
A. Constant Velocity
B. 0 Acceleration

Answers

Answer 1

Answer:

if it is horizontal line, that means position is same but time is increasing.

velocity=0 . particle is not even moving

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How strong does an earthquake have to be to cause a tsunami

Answers

Answer:

An earthquake with the magnitude of more than 7.5 on the Richter scale can cause to a destructive Tsunami.

Explanation:

According to International Tsunami Information center, the cause of the most destructive tsunami is shallow and large earthquake with the epicenter or fault line on the ocean floor or near the ocean floor.
When the tectonic plates (are pieces of earth's crust and uppermost mantle) are collided with each other then the earthquake occurs. This results in the displacement of large area of ocean floor from few km to 1000 km or more. This displacement of ocean floor in the formation of tsunami waves.
Like in the 1960, the tsunami in Chile was resulted due to earthquake with the magnitude of 9.5 on Richter scale with rupture area of over 1000 km. This tsunami not only cause destruction in Chile but also affected the other countries like Japan.

You try to hit an annoying pigeon by throwing a ball straight up into the air with a velocity of 16 m/s. What is its velocity 0.5s into flight?

Answers

Answer:

20.9 m/s

Explanation:

Given that,

Initial velocity, u = 16 m/s

We need to find its velocity 0.5 s into flight when a ball straight up into the air. Let it is v. It will move under the action of gravity. Using first equation of motion to find it as follows :

v=u+at

Here, a = g

v = 16 + 9.8(0.5)

v = 20.9 m/s

So, the final velocity is 20.9 m/s.

Two similar sized stones one heavy and one light dropped from the same height into a pond explain why the impact of the heavy stone would produce with a higher amplitude than the impact of the light stone would

Answers

The impact of the heavy stone would produce with a higher amplitude than the impact of the light stone would because of having high potential energy.

What is gravitational potential energy?

An object's gravitational potential energy is described as the energy it would have had if it had defied gravity and risen to a certain height. Due to having only magnitude and no direction, it is a scalar quantity with SI unit of Joule.

Let, the mass of the heavy stone is m₁ and mass of the light stone is m₂ (m₁ > m₂). Both of them are dropped from same height h.

Then, gravitational potential energy of heavy stone is, V₁ = m₁gh.

And, gravitational potential energy of lighter stone is, V₂ = m₂gh.

Where, g = acceleration due to gravity.

Now, as m₁ > m₂; V₁> V₂

Due to having more potential energy, when the stones are dropped into a pond from same height, the heavy stone would produce with a higher amplitude than the impact of the light stone would.

Learn more about potential energy here:

brainly.com/question/8822715

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in energy point of view, the larger stone had more potential energy before dropping. impacting the water, the larger one, having more kinetic energy which changed from potential energy, tranfered energy to the water and formed wave. the amplitude of the wave indicate the energy of the wave. more energy more amplitude.

A 3,000-N force gives an object an acceleration of 15 m/s2. The mass of the object is

Answers

Answer:

force= mass x acceleration

3000 N = m x 15

m= 3000/15

m=200 kg

A space vehicle deploys its re-entry parachute when it's traveling at a vertical velocity of -150 meters/second (negative because the parachute is going down.) It comes to rest at 0 meters/second after 30 seconds. What's the average acceleration of the shuttle during this time span?

Answers

Acceleration, in physics, is the rate of change of velocity of an object with respect to time. An object's acceleration is the net result of any and all forces acting on the object, as described by Newton's Second Law.
a = change in velocity / change in timea = 0 - (-150) / 30 - 0a = 5 m/s2

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