All Flashcards
What are the differences between displacement and distance?
Displacement: Change in position, can be negative. Distance: Total path length, always positive.
What are the differences between velocity and speed?
Velocity: Rate of change of displacement, vector quantity. Speed: Rate of change of distance, scalar quantity.
How do constant acceleration and non-uniform acceleration differ in problem-solving?
Constant Acceleration: Kinematic equations can be used directly. Non-uniform Acceleration: Kinematic equations cannot be directly applied; requires calculus or graphical analysis.
Compare and contrast position vs. time and velocity vs. time graphs.
Position vs. Time: Slope is velocity. Velocity vs. Time: Slope is acceleration, area under the curve is displacement.
Compare the effect of gravity on objects of different masses.
Gravity: Acceleration due to gravity is constant (approximately 10 m/s²) and does not depend on the object's mass.
Define 'motion diagram'.
A motion diagram shows an object's position at different times, illustrating its movement.
Define 'kinematic equations'.
Equations that describe the motion of an object with constant acceleration, relating displacement, velocity, acceleration, and time.
Define 'acceleration'.
The rate of change of velocity with respect to time.
Define 'displacement'.
The change in position of an object; a vector quantity.
Define 'velocity'.
The rate of change of displacement with respect to time; a vector quantity.
What is the effect of gravity on an object near Earth's surface?
It causes a constant downward acceleration of approximately .
What is the effect of a constant positive acceleration on an object's velocity?
The object's velocity increases linearly with time in the positive direction.
What is the effect of a constant negative acceleration on an object's velocity?
The object's velocity decreases linearly with time, or increases in the negative direction.
What is the effect of a non-zero slope on a position vs. time graph?
It indicates that the object has a non-zero velocity.
What is the effect of a non-zero area under a velocity vs. time graph?
It indicates that the object has a non-zero displacement.