zuai-logo
zuai-logo
  1. AP Calculus
FlashcardFlashcard
Study GuideStudy GuideQuestion BankQuestion BankGlossaryGlossary

What does the area under a velocity-time graph represent?

Displacement.

Flip to see [answer/question]
Flip to see [answer/question]
Revise later
SpaceTo flip
If confident

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: r(t)=⟨f(t),g(t)⟩\mathbf{r}(t) = \langle f(t), g(t) \rangler(t)=⟨f(t),g(t)⟩ | Parametric: x(t)=f(t),y(t)=g(t)x(t) = f(t), y(t) = g(t)x(t)=f(t),y(t)=g(t)

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 v(t)\mathbf{v}(t)v(t) from t=at=at=a to t=bt=bt=b?

  1. Integrate v(t)\mathbf{v}(t)v(t) from aaa to bbb. 2. Evaluate the integral to find the change in position.

How to find distance traveled given r(t)\mathbf{r}(t)r(t) from t=at=at=a to t=bt=bt=b?

  1. Find r′(t)\mathbf{r}'(t)r′(t). 2. Find ∣r′(t)∣|\mathbf{r}'(t)|∣r′(t)∣. 3. Integrate ∣r′(t)∣|\mathbf{r}'(t)|∣r′(t)∣ from aaa to bbb.

How to find velocity given r(t)\mathbf{r}(t)r(t)?

Differentiate r(t)\mathbf{r}(t)r(t) with respect to ttt.

How to find acceleration given v(t)\mathbf{v}(t)v(t)?

Differentiate v(t)\mathbf{v}(t)v(t) with respect to ttt.

How to find distance traveled with parametric equations x(t)x(t)x(t) and y(t)y(t)y(t)?

  1. Find dxdt\frac{dx}{dt}dtdx​ and dydt\frac{dy}{dt}dtdy​. 2. Use the formula S=∫ab(dxdt)2+(dydt)2dtS = \int_a^b \sqrt{\left( \frac{dx}{dt} \right)^2 + \left( \frac{dy}{dt} \right)^2} dtS=∫ab​(dtdx​)2+(dtdy​)2​dt.

Given position s(t)s(t)s(t), how do you find the time when the object is at rest?

  1. Find v(t)=s′(t)v(t) = s'(t)v(t)=s′(t). 2. Set v(t)=0v(t) = 0v(t)=0 and solve for ttt.

How do you determine if an object is speeding up or slowing down?

  1. Find v(t)v(t)v(t) and a(t)a(t)a(t). 2. If v(t)v(t)v(t) and a(t)a(t)a(t) 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?

  1. Find the time when the vertical velocity is zero. 2. Plug that time into the position function to find the height.