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sasho [114]
2 years ago
11

rock x is released from rest at the top of a cliff that is on earth. a short time later, rock y is released from rest from the s

ame location as rock x. both rocks fall for several seconds before landing on the ground directly below the cliff. frictional forces are considered to be negligible. which of the following graphs correctly shows the vertical velocity of rock x as a function of time? take the positive direction to be upward.
SAT
1 answer:
Sergeu [11.5K]2 years ago
4 0

The velocity of an object in free fall increases downwards with time

  • Please find attached the correct graph showing velocity as a function time, with the positive direction to be upwards.

Reason:

The known parameters are;

Location where the rocks are released; Earth

The time at which rock Y is released = A few seconds after rock X is released.

Required:

To select the graph that shows the vertical velocity of rock, <em>x</em>, as a function of time.

Solution:

Let <em>t </em>represent the time after which rock x are released,  with the positive direction being upwards, we have;

  • The equation for the velocity of x is v = -9.81·t

With the above equation, the graph of the vertical velocity of rock x is plotted with MS Excel.

Learn more about the graphs of velocity of object in free fall here:

brainly.com/question/11363021

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Review the table of values for function h(x). x h(x) 9.9 12.7 9.99 12.97 9.999 12.997 9.9999 12.9997 10 undefined 10.0001 18.500
defon

As h(x) approaches 10+ the limit is given as 18.5

<h3>What is limit in mathematics?</h3>

The limit in mathematics has to do with the value that a function would approach as the input in the limit approaches a particular value.

It is when a function would be made to approach output at a particular input value. The concept is very important in calculus as well as analysis in mathematics. They help to define integrals, derivatives as well as continuities in mathematics.

<h3>How to solve for the limit</h3>

The x equation that we have in the question is given as

x = (10+n)

We are to find the limit of lim h(10+n)

This is as h tends towards 10.

h→10

When we go to the table we would observe what happens as 10 moves towards this value. In the given table we would have h as it tends towards 10. In the right hand side of this table we would see that as X is moving towards 10, the value changes to 18.5

Hence the answer to this question is 18.5

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Identify which statement is true of specialty products.
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The only statement that is true of Specialty Products is; D: Brand names and quality of service are often very important.

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Specialty products are defined as products with unique characteristics or special brand identification. The consumers of these specialty products are willing to go the extra mile to purchase them and as such they typically high priced products and buyers do not use much time to compare against other products.

Looking at the given options, the only one that is true of specialty products is Option D.

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It’s takes 5100 Nof force to accelerate a Ford Mustang 3 m/s2 what is the mass of the car
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The force is 5100 N which is accelerating a Ford Mustang. The mass of the car is 1700 kg.

<h3>What is force?</h3>

A force is an influence that can alter an object's motion. A force can modify the velocity of a mass item. Force is calculated in Newton.

In physics, mass is a quantitative measure of inertia, which is a fundamental property of all matter. Mass is measured in kilograms and grams.

The force is given as 5100 N

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