All Flashcards
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.
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 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.