All Flashcards
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.
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.
What is the effect of a positive slope on a position vs. time graph?
The object is moving in the positive direction.
What is the effect of a negative slope on a velocity vs. time graph?
The object is slowing down (decelerating).
What is the effect of gravity on an object thrown upwards near Earth's surface?
The object experiences a constant downward acceleration of approximately 10 m/s².
What happens to the maximum height of a projectile if gravity is halved?
The maximum height doubles.
What is the effect of constant acceleration on an object's velocity?
The object's velocity changes uniformly over time.