Calculus 1 : How to find velocity

Study concepts, example questions & explanations for Calculus 1

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Example Questions

Example Question #291 : Calculus

The position of a particle is given by the following function: 

What is the velocity of the particle at ?

Possible Answers:

Correct answer:

Explanation:

In order to find the velocity of a particle at a certain point, we must first find the derivative.

To find the derivative we must use the trigonometric rules of differentiation for cosine and sine which states,

and the power rule,

.

Thus we get,

.

Then find the value of   when :

Therefore, the answer is: 

Example Question #292 : Velocity

The position of a particle is given by the function . What is the velocity of the particle at time  ?

Possible Answers:

Correct answer:

Explanation:

Velocity of a particle can be found by taking the derivative of the position function with respect to time. Recall that a derivative gives the rate of change of some parameter, relative to the change of some other variable. When we take the derivative of position with respect to time, we are evaluating how position changes over time; i.e velocity!

To take the derivative of the position function

We'll need to make use of the following derivative rule(s):

Derivative of a natural log: 

Trigonometric derivative: 

Using the above properties, the velocity function is

At time 

Example Question #293 : Velocity

The position of a particle is given by the function . What is the velocity of the particle at time  ?

Possible Answers:

Correct answer:

Explanation:

Velocity of a particle can be found by taking the derivative of the position function with respect to time. Recall that a derivative gives the rate of change of some parameter, relative to the change of some other variable. When we take the derivative of position with respect to time, we are evaluating how position changes over time; i.e velocity!

To take the derivative of the position function

We'll need to make use of the following derivative rule(s):

Derivative of a natural log: 

Trigonometric derivative: 

Using the above properties, the velocity function is

At time 

Example Question #294 : Velocity

The position of a particle is given by the function . What is the velocity of the particle at time  ?

Possible Answers:

Correct answer:

Explanation:

Velocity of a particle can be found by taking the derivative of the position function with respect to time. Recall that a derivative gives the rate of change of some parameter, relative to the change of some other variable. When we take the derivative of position with respect to time, we are evaluating how position changes over time; i.e velocity!

To take the derivative of the position function

We'll need to make use of the following derivative rule(s):

Derivative of a natural log: 

Trigonometric derivative: 

Using the above properties, the velocity function is

At time 

Example Question #295 : Velocity

The position of a particle is given by the function . What is the velocity of the particle at time  ?

Possible Answers:

Correct answer:

Explanation:

Velocity of a particle can be found by taking the derivative of the position function with respect to time. Recall that a derivative gives the rate of change of some parameter, relative to the change of some other variable. When we take the derivative of position with respect to time, we are evaluating how position changes over time; i.e velocity!

To take the derivative of the position function

We'll need to make use of the following derivative rule(s):

Derivative of a natural log: 

Trigonometric derivative: 

Using the above properties, the velocity function is

At time 

Example Question #296 : Velocity

The position of a particle is given by the function . What is the velocity of the particle at time  ?

Possible Answers:

Correct answer:

Explanation:

Velocity of a particle can be found by taking the derivative of the position function with respect to time. Recall that a derivative gives the rate of change of some parameter, relative to the change of some other variable. When we take the derivative of position with respect to time, we are evaluating how position changes over time; i.e velocity!

To take the derivative of the position function

We'll need to make use of the following derivative rule(s):

Derivative of an exponential: 

Derivative of a natural log: 

Trigonometric derivative: 

Note that u may represent large functions, and not just individual variables!

Using the above properties, the velocity function is

At time 

Example Question #297 : Velocity

The position of a particle is given by the function . What is the velocity of the particle at time  ?

Possible Answers:

Correct answer:

Explanation:

Velocity of a particle can be found by taking the derivative of the position function with respect to time. Recall that a derivative gives the rate of change of some parameter, relative to the change of some other variable. When we take the derivative of position with respect to time, we are evaluating how position changes over time; i.e velocity!

To take the derivative of the position function

We'll need to make use of the following derivative rule(s):

Derivative of an exponential: 

Derivative of a natural log: 

Trigonometric derivative: 

Note that u may represent large functions, and not just individual variables!

Using the above properties, the velocity function is

At time 

Example Question #298 : Velocity

What is  when  ?

Possible Answers:

Correct answer:

Explanation:

To find the velocity at , you must first find the velocity function, which is the derivative of the position function. To take the derivative, you must multiply the exponent by the leading coefficient and then subtract  from the exponent. Therefore, the velocity function is: . Then, to find the velocity at , plug in. Your answer is .

Example Question #299 : Velocity

The position of a point is found by the following function:

What is the velocity at ?

Possible Answers:

Correct answer:

Explanation:

In order to find the velocity of any point given a position function, we must first find the derivative of the position function, .

This is the position function: 

The derivative gives us the velocity function: 

 

You can then find the velocity of a given point by substituting it in for the variable: 

Therefore, the velocity at  is: 

Example Question #300 : Velocity

The position of a point is found by the following function:

What is the velocity at ?

Possible Answers:

Correct answer:

Explanation:

In order to find the velocity of any point given a position function, we must first find the derivative of the position function, .

This is the position function: 

The derivative gives us the velocity function:  

You can then find the velocity of a given point by substituting it in for the variable: 

Therefore, the velocity at  is: 

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