AP Physics 1 (Mrs. Lang) | Unit 1 Flashcards

AP Physics 1 - Unit 1: Kinematics | Test Review

Displacement (Δx)

Change in position of an object. Measured in meters (m).

Velocity (v)

Rate of change of displacement with respect to time. Units: meters per second (m/s).

Slope of Position-Time Graph

Represents velocity. Positive slope indicates forward motion, and negative slope indicates backward motion.

Velocity Equation

where Δx = change in position, Δt = change in time.

Position Equation

where y = position, slope = velocity, x = time, b = y-intercept (initial position).

Displacement Equation

where x_f = final position, x_i​ = initial position, v = velocity, t = time.

Graph Analysis - Tumble Buggy Moving Forward from +1m

• Graph Characteristics: Positive slope, starting at +1m.

• Motion Description: Forward motion with constant velocity.

Graph Analysis - Tumble Buggy Moving Back from 0m

• Graph Characteristics: Negative slope, starting at 0m.

• Motion Description: Backward motion with constant velocity.

Graph Analysis - Tumble Buggy Moving Backward from -2m

• Graph Characteristics: Negative slope, starting at -2m.

• Motion Description: Backward motion with constant velocity.

Graph Analysis - Tumble Buggy Changing Direction

• Graph Characteristics: Combination of positive and negative slopes, indicating a change in direction.

• Motion Description: Initial forward motion, then changes direction to move backward.

Final Velocity Equation

where v_f​ = final velocity, v₀​ = initial velocity, a = acceleration, t = time.

Displacement Equation (Constant Velocity)

where Δx = displacement, v = velocity, t = time.

Acceleration Definition

Acceleration (a): Rate of change of velocity with respect to time. Measured in meters per second squared (m/s²).

Graph Area as Displacement

Area under Velocity-Time Graph: Represents displacement.

where b = time interval, h = velocity.

Displacement Equation (Constant Acceleration)

where Δx = displacement, v₀​ = initial velocity, a = acceleration, t = time.

Alternate Formulas for Displacement and Velocity

Uses both initial and final velocities to find displacement.

Equation for Final Velocity Using Displacement

Relates initial and final velocities, acceleration, and displacement.

Free Fall Final Velocity Equation

V_f = V₀ - gt

Free Fall Distance Formula

Δy = v₀t - (1/2)gt²

Free Fall Final Velocity Formula Without Time

v_f² = v₀² - 2gΔy

Gravity Velocity

-10 m/s²