Calculus 1 : Spatial Calculus

Example Questions

Example Question #71 : How To Find Velocity

The position equation of an object is given by the equation . What is the velocity of the object?

Explanation:

The velocity of the object can be found by differentiating the object's position. This equation can be accurately differentiated using the chain rule and the power rule.

The chain rule is,

and the power rule is,

.

Therefore the velocity of the object is

.

Example Question #72 : How To Find Velocity

A particles position, , as a function of time is given by

where  are constants.

Find equations for the velocity, , and acceleration, , of the particle.

Explanation:

The velocity of a moving object is given by .

The acceleration of a moving object is given by .

We will need to differntiate once to get velocity and another time to get the acceleration. We will need to use the power rule when differentiating. The power rule is as follows.

Using these formulas we find that

Example Question #73 : How To Find Velocity

The position, , of a partice is given by the following equation.

What is this particle's velocity at ?

Explanation:

To find the velocity of the particle we first need to differentiate the position function. To take the derivative we will use the power rule.

Thus the velocity of a particle is found to be,

.

Plugging in for t=2, we find

.

Example Question #74 : How To Find Velocity

The position of an object is given by the equation . What is the velocity of the object?

Explanation:

The velocity of the object can be found by differentiating the position of the object. To accurately differentiate the position we can use the power rule and the chain rule.

The power rule is, .

The chain rule is, .

Differenting the object's position using these two equations gives

.

Example Question #75 : How To Find Velocity

The position of an object is given by the equation . What is the velocity of the object?

Explanation:

The velocity of the object can be found by differentiating the object's position. To accurately differentiate the object's position we can use the product rule and the power rule where if

and if

.

Using these rules the velocity equation is

.

Example Question #76 : How To Find Velocity

The position of an object is given by the equation . What is the velocity of the object at ?

Explanation:

The velocity of the object is equal to the derivative of the object's position. The velocity can be found using the power rule and the chain rule where if

and if

.

Therefore the velocity of the object is

.

At time , the velocity is

Example Question #77 : How To Find Velocity

The acceleration of an object is given by the equation . What is the velocity of the object at time , if the initial velocity of the object is ?

None of the above.

Explanation:

The velocity of the object can be found by integrating the acceleration. This can be done using the power rule where if

.

Using this rule the velocity of the object is

.

The constant  can be found using the initial velocity of the object.

Therefore  and .

With the velocity equation we solve for the velocity at .

Example Question #78 : How To Find Velocity

The position equation of an object is . What is the velocity of the object?

Explanation:

To find the velocity we can differentiate the position of the object. To do this accurately we use the product rule and the power rule.

The product rule is

.

The power rule is

.

The velocity of the equation is then found to be

.

Example Question #79 : How To Find Velocity

The position of an object is given by the equation . What is the velocity of the object at time ?

Explanation:

The velocity of the object is equal to the derivative of the position. To differentiate the position we use the power rule where if

.

With this rule we find the velocity equation to be

.

Using time , we can obtain a velocity of

.

Example Question #80 : How To Find Velocity

The acceleration of an object is given by the equation . What is the velocity of the object, if the initial velocity of the object is ?

Explanation:

To find the velocity we must integrate the acceleration using the power rule.

The power rule is where

.

Applying this to the acceleration equation gives

.

Using the initial velocity we find the value of .

Therefore  and .