All Flashcards
Define instantaneous velocity.
The rate of change of position with respect to time at a specific instant; mathematically, .
Define instantaneous acceleration.
The rate of change of velocity with respect to time at a specific instant; mathematically, .
What is displacement?
The change in position of an object. On a velocity vs. time graph, it's the area under the curve: .
Define gravitational acceleration (g).
The constant downward acceleration experienced by objects near Earth's surface due to gravity, approximately .
What are kinematic equations?
Equations that describe the motion of objects with constant acceleration, relating position, velocity, time, and acceleration.
What is the difference between average velocity and instantaneous velocity?
Average velocity: Displacement over a time interval. Instantaneous velocity: Velocity at a specific point in time.
What is the difference between displacement and distance?
Displacement: Change in position with direction. Distance: Total length of the path traveled, regardless of direction.
Compare and contrast position vs. time graphs and velocity vs. time graphs.
Position vs. Time: Slope is velocity. Velocity vs. Time: Slope is acceleration, area is displacement.
How does the sign of acceleration relate to the direction of motion?
Positive Acceleration: Acceleration is in the positive direction, increasing velocity in that direction. Negative Acceleration: Acceleration is in the negative direction, decreasing velocity in that direction.
Differentiate between velocity and acceleration.
Velocity: Rate of change of position. Acceleration: Rate of change of velocity.
How do you determine velocity from a position vs. time graph?
Calculate the slope of the line at a specific point. Slope = velocity.
How do you determine displacement from a velocity vs. time graph?
Calculate the area under the curve of the velocity vs. time graph.
How do you determine change in velocity from an acceleration vs. time graph?
Calculate the area under the curve of the acceleration vs. time graph.
What is the first step in solving a kinematic equation problem?
Identify the known variables (initial velocity, final velocity, acceleration, time, displacement) and the unknown variable you need to find.
What is the second step in solving a kinematic equation problem?
Choose the kinematic equation that includes the known variables and the unknown variable.