Physics for students

On a displacement-time graph …
-slope equals velocity.
-the "y" intercept equals the initial displacement.
-when two curves coincide, the two objects have the same displacement at that time.
-straight lines imply constant velocity.
-curved lines imply acceleration.
-an object undergoing constant acceleration traces a portion of a parabola.
-average velocity is the slope of the straight line connecting the endpoints of a curve.
-instantaneous velocity is the slope of the line tangent to a curve at any point.
-positive slope implies motion in the positive direction.
-negative slope implies motion in the negative direction.
-zero slope implies a state of rest.
-The area under the curve is meaningless


On a velocity-time graph …
-slope equals acceleration.
-the"y" intercept equals the initial velocity.
-when two curves coincide, the two objects have the same velocity at that time.
-straight lines imply uniform acceleration.
-curved lines imply non-uniform acceleration.
-an object undergoing constant acceleration traces a straight line.
-average acceleration is the slope of the straight line connecting the endpoints of a curve.
-instantaneous acceleration is the slope of the line tangent to a curve at any point.
-positive slope implies an increase in velocity in the positive direction.
-negative slope implies an increase in velocity in the negative direction.
-zero slope implies motion with constant velocity.
-the area under the curve equals the change in displacement.


On an acceleration-time graph …
-slope is meaningless.
-the"y" intercept equals the initial acceleration.
-when two curves coincide, the two objects have the same acceleration at that time.
-an object undergoing constant acceleration traces a horizontal line.
-zero slope implies motion with constant acceleration.
-the area under the curve equals the change in velocity.