All AP Physics C: Mechanics Resources
Example Questions
Example Question #11 :Motion
A man runs with a velocity as described by the function below.
How far does he travel in 1 minute?
Distance is given by the integral of a velocity function. For this question, we will need to integrate over the interval of 0s to 60s.
Example Question #1 :计算一维运动
A man runs with a velocity described by the function below.
What is the function for his acceleration?
The function for acceleration is the derivative of the function for velocity.
Example Question #11 :Motion
A particle traveling in a straight line accelerates uniformly from rest toinand then continues at constant speed for an additional for an additional. What is the total distance traveled by the particle during the?
First off we have to convertto meters per second.
Next we have to calculate the distance the object traveled the first 5 seconds, when it was starting from rest. We are given time, initial speed to be. The acceleration of the object at this time can be calculated using:
, substituting the values, we get:
Next, we use the distance equation to find the distance in the first 5 seconds:
because the initial speed is.
If we plug in,, we get:
Next we have to find the distance the the object travels at constant speed for 3 seconds. We can use the equation:
in this case is not equal to, it is equal toand
Plugging in the equation, we get
Addingandwe get the total distance to be