Calculus 1 : Position
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Example Questions
Example Question #1 : How To Find Position
Find a vector perpendicular to (4,3).
In general, if we have a vector (a,b), a perpendicular vector is (b,-a).
So here, the perpendicular vector is (3,-4).
Example Question #1 : How To Find Position
if a=i + 2j - 3k and b=4i + 7k, express the vector 3a + 2b.
To express the vector in terms of i, j, and k, we need to combine like terms and distribute.
3a + 2b
= 3(i + 2j - 3k) + 2(4i + 7k)
= 3i + 6j - 9k + 8i + 14k
= 11i +6j + 5k
Example Question #3 : How To Find Position
The velocity of a particle is given by the function 
To find the position from velocity, the function must be integrated. This gives 
Example Question #4 : How To Find Position
The veloctiy of a particle at time 
Cannot be determined.
The position function is the intergral of the velocity function. So here, position is given by 
Example Question #1 : How To Find Position
Find the position at 
To find the position from the acceleration function, integrate the acceleration function twice.
Substitute 
Example Question #6 : How To Find Position
Find the position at 
To find the position function, integrate the acceleration function twice.
Evalute the position at 
Example Question #7 : How To Find Position
The velocity of an object is given by the following equation:
If 
Velocity is the derivative of position, so in order to obtain an equation for position, we must integrate the given equation for velocity:
The next step is to solve for C by applying the given initial condition, s(0)=5:
So our final equation for position is:
Example Question #8 : How To Find Position
The position function of a ball from the ground when it is thrown by a pitcher is 
Where is the ball located at 
To find the position of the ball, we plug in
So 
Example Question #9 : How To Find Position
Function 
Find the equation that models the particle's postion as a function of time.
Recall that velocity is the first derivative of position, and acceleration is the second derivative of position. We begin with velocity, so we need to integrate to find position and derive to find acceleration.
We are starting with the following
We need to perform the following:
Recall that to integrate, we add one to each exponent and divide by the that number, so we get the following. Don't forget your +c as well.
Which makes our position function, h(t), the following:
Example Question #10 : How To Find Position
Consider the velocity function modeled in meters per second by v(t).
Find the position of a particle whose velocity is modeled by 
Recall that velocity is the first derivative of position, so to find the position function we need to integrate 
Becomes,
Then, we need to find 
So our final answer is:
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