Calculus 1 : Calculus

Study concepts, example questions & explanations for Calculus 1

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Example Questions

Example Question #891 : Spatial Calculus

Find a vector perpendicular to 

Possible Answers:

Correct answer:

Explanation:

By definition, any vector  has a perpendicular vector . Given a vector , the perpendicular vector is .

We can verify this further by noting that the product of any vector  and its perpendicular vector  is equal to , or . Taking the product of  and , we get:

Example Question #892 : Spatial Calculus

Find a vector perpendicular to .

Possible Answers:

Correct answer:

Explanation:

By definition, any vector  has a perpendicular vector . Given a vector , the perpendicular vector is 

We can verify this further by noting that the product of any vector  and its perpendicular vector  is equal to , or . Taking the product of  and , we get:

Example Question #7 : Integration

If the velocity function of a car is , what is the position when ?

Possible Answers:

Correct answer:

Explanation:

To find the position from the velocity function, take the integral of the velocity function.

Substitute .

Example Question #893 : Spatial Calculus

For this question, remember that velocity is .

A particle's velocity is given by the function . What is the particle's position at ?

Possible Answers:

Correct answer:

Explanation:

Position is the anti-derivative of velocity, so we find the anti-derivative of the given velocity function to find the position function.

The velocity function is given as , and the anti-derivative of this using the power rule is 

.

We then evaluate that function at the given point  to get,

.

Example Question #41 : Position

Which of the following is perpendicular to the vector ?

Possible Answers:

Correct answer:

Explanation:

By definition, a given vector  has a perpendicular vector .  

Since we are given a vector , we therefore know that its perpendicular vector is 

Perpendicular vectors have a dot product of zero therefore,

Example Question #42 : Position

Which of the following is perpendicular to the vector ?

Possible Answers:

Correct answer:

Explanation:

By definition, a given vector  has a perpendicular vector .  Since we are given a vector , we therefore know that its perpendicular vector is 

Perpendicular vectors have a dot product of zero therefore,

Plugging in our values, we can verify the two vectors are perpendicular.

Example Question #43 : Position

Which of the following is perpendicular to the vector ?

Possible Answers:

Correct answer:

Explanation:

By definition, a given vector  has a perpendicular vector .  Since we are given a vector , we therefore know that its perpendicular vector is 

Perpendicular vectors have a dot product of zero therefore,

Plugging in our values, we can verify the two vectors are perpendicular.

Example Question #41 : How To Find Position

Harold is sitting in a parked car 10 feet from a wall. He begins to accelerate the car at a rate of 14 feet per second squared away from the wall. How far away from the wall will he be in 6 seconds?

Possible Answers:

Correct answer:

Explanation:

To begin, let's recognize that since acceleration is the second derivative of position with respect to time, we can in turn, integrate an acceleration function twice with respect to time to find position.

Since accleration is a constant, 14 feet per second, our acceleration function is:

Integrating this once gives us a velocity function

where

is our initial velocity.  Since the car started at rest, v0 will be equal to zero, leaving us with:

To get our position function, we can in turn integrate our velocity function:

where x0 is our initial position. We are told that our initial position is 10 feet away from the wall, so we can rewrite this equation as:

To find where the car is at 6 seconds, we need only plug in the value of 6 seconds where ever our time variable t occurs, giving our answer of 262 feet.

Example Question #45 : Position

Which of the following vectors is perpendicular to ?

Possible Answers:

Correct answer:

Explanation:

By definition, a given vector  has a perpendicular vector . Therefore, the vector perpendicular to  is .

To verify that two vectors are perpendicular their dot product must equal zero.

The dot product is as follows.

Substituting in our vector values we get:

Example Question #892 : Spatial Calculus

Which of the following vectors is perpendicular to ?

Possible Answers:

Correct answer:

Explanation:

By definition, a given vector  has a perpendicular vector . Therefore, the vector perpendicular to  is .

To verify that two vectors are perpendicular their dot product must equal zero.

The dot product is as follows.

Substituting in our vector values we get:

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