All Flashcards
What does the area under a velocity-time graph represent?
Displacement.
What does the slope of a position-time graph represent?
Velocity.
What does the slope of a velocity-time graph represent?
Acceleration.
How can you determine when an object changes direction from a velocity-time graph?
Look for points where the velocity graph crosses the t-axis (changes sign).
How can you estimate the total distance traveled from a velocity-time graph?
Estimate the area between the curve and the t-axis, considering areas below the axis as positive.
What does a horizontal line on a velocity-time graph indicate?
Constant velocity (zero acceleration).
What does a horizontal line on an acceleration-time graph indicate?
Constant acceleration.
How does the concavity of a position-time graph relate to acceleration?
Concave up indicates positive acceleration; concave down indicates negative acceleration.
What does the area under an acceleration-time graph represent?
Change in velocity.
How can you determine the time intervals when an object is speeding up or slowing down from a velocity-time graph?
Speeding up when velocity and acceleration have the same sign (both positive or both negative); slowing down when they have opposite signs.
Displacement vs. Distance Traveled.
Displacement: Change in position | Distance Traveled: Total path length.
Vector-Valued vs. Parametric Functions.
Vector-Valued: | Parametric:
Velocity vs. Speed.
Velocity: Vector with magnitude and direction | Speed: Magnitude of velocity (scalar).
Differentiation vs. Integration.
Differentiation: Finds rate of change | Integration: Finds accumulation/area.
Position vs. Velocity.
Position: Location at time t | Velocity: Rate of change of position at time t
Velocity vs. Acceleration.
Velocity: Rate of change of position at time t | Acceleration: Rate of change of velocity at time t
Average Velocity vs. Instantaneous Velocity.
Average Velocity: Displacement / Time | Instantaneous Velocity: Velocity at a specific time
Average Speed vs. Instantaneous Speed.
Average Speed: Total Distance / Time | Instantaneous Speed: Speed at a specific time
Displacement with Vector Valued Functions vs. Parametric Functions
Vector Valued: Integrate the vector | Parametric: Integrate each component separately
Distance Traveled with Vector Valued Functions vs. Parametric Functions
Vector Valued: Integrate the magnitude of the derivative of the position vector | Parametric: Integrate the square root of the sum of the squares of the derivatives of x and y with respect to t
How to find displacement given from to ?
- Integrate from to . 2. Evaluate the integral to find the change in position.
How to find distance traveled given from to ?
- Find . 2. Find . 3. Integrate from to .
How to find velocity given ?
Differentiate with respect to .
How to find acceleration given ?
Differentiate with respect to .
How to find distance traveled with parametric equations and ?
- Find and . 2. Use the formula .
Given position , how do you find the time when the object is at rest?
- Find . 2. Set and solve for .
How do you determine if an object is speeding up or slowing down?
- Find and . 2. If and have the same sign, the object is speeding up. If they have opposite signs, the object is slowing down.
How do you find the average velocity of a particle?
Divide the total displacement by the total time elapsed.
How do you find the average speed of a particle?
Divide the total distance traveled by the total time elapsed.
How do you find the maximum height of a projectile?
- Find the time when the vertical velocity is zero. 2. Plug that time into the position function to find the height.