Motion Graphs Physics

How to interpret a Position vs. time Graph Low on the graph. Far Away High on the graph. x Slopes uphill. Toward Near t Slopes downhill.

How to interpret a Position vs. time Graph Steep slope. Not moving Fast Turn Gradual slope. x Slow Slope is flat. t Slope changes direction

How to interpret a Velocity vs. time Graph In top quadrant. Fast + Quadrant In bottom quadrant. Away Far from the time axis. Slow v Close to the time axis. Slow t Toward On the time axis. Fast - Quadrant

How to interpret a Velocity vs. time Graph Gets further from time axis. Constant speed Gets closer to the time axis. Getting faster Turn Slowing down Graph is flat. v t Slowing down Switches quadrants Getting faster

Draw a MOTION MAP a POSITION graph and a VELOCITY graph for each of the following scenarios. . . . . R . . . . . . R

Draw a MOTION MAP a POSITION graph and a VELOCITY graph for each of the following scenarios.

Draw a MOTION MAP a POSITION graph and a VELOCITY graph for each of the following scenarios.

The following graphs are POSITION vs. TIME The following graphs are POSITION vs. TIME. Describe the motion of objects A and B below each graph. SAME: DIFFERENT: BOTH MOVING AWAY AT CONSTANT SPEEDS. SAME: DIFFERENT: BOTH MOVING AT SAME SPEED. (KNOW THIS BECAUSE THEY ARE PARALLEL.) A IS GOING FASTER. A GOT A HEAD START (POSITION WISE). A DID NOT START AT ZERO.

The following graphs are POSITION vs. TIME The following graphs are POSITION vs. TIME. Describe the motion of objects A and B below each graph. BOTH: A: B: W: M: WHERE IS THE SPEED THE SAME? A: B: Q: Z: BOTH ARE MOVING AWAY A IS MOVING AWAY AT A CONSTANT SPEED. A IS SPEEDING UP. B IS SLOWING DOWN. B IS NOT MOVING. W IS WHERE THEY PASS. Q IS WHERE B IS AT. M IS WHEN THEY PASS. WHEN THEY ARE PARALLEL. Z IS THE TIME A PASSED B.

The following graphs are VELOCITY vs. TIME The following graphs are VELOCITY vs. TIME. Describe the motion of objects A and B below each graph. SAME: DIFFERENT: BOTH MOVING AWAY AT CONSTANT SPEEDS. SAME: A: B: BOTH MOVING AT CONSTANT SPEEDS. A IS GOING AWAY. A IS GOING FASTER THAN B. B IS COMING BACK. SO SAME SPEEDS BUT DIFFERENT DIRECTIONS.

The following graphs are VELOCITY vs. TIME The following graphs are VELOCITY vs. TIME. Describe the motion of objects A and B below each graph. 1 2 3 SAME VELOCITY HERE SAME: A: B: A & B MOVE AWAY. 1) 2) 3) MOVING AWAY AND GETTING SLOWER STOPS (INSTANTANEOUS STOP) AND TURNS A IS GETTING FASTER. COMING BACK AND GETTING FASTER. B IS GETTING SLOWER. EXAMPLE OF THIS IS THROWING A BALL.

HOW TO INTERPRET AN ACCELERATION VS. TIME GRAPH When it comes to acceleration graphs there are three kinds to choose from: POSITIVE NEGATIVE ZERO

HOW DO I KNOW WHICH ACCELERATION GRAPH TO CHOOSE? Looking at VELOCITY graphs: If the velocity graph goes up, then… Example If the velocity graph goes down, then... POSITIVE ACCELERATION. v t v t a t NEGATIVE ACCELERATION. v t v t a t

HOW DO I KNOW WHICH ACCELERATION GRAPH TO CHOOSE? VELOCITY graphs (Cont.): If the velocity graph is constant, then… Example I know this because... ZERO ACCELERATION. v t v t a t ACCELERATION IS THE SLOPE OF A VELOCITY VS. TIME GRAPH

HOW DO I KNOW WHICH ACCELERATION GRAPH TO CHOOSE? Looking at POSITION graphs: If the position vs. time graph makes a smiley face or half of a smiley face, then… Example If the position vs. time graph makes a frowny face or half a frowny face, then... POSITIVE ACCELERATION. x x x a t Tell them about the homework. They will need to save it as they go along. It should warn them as they hit the back button that they will loose their work, however safer to not use the back button. NEGATIVE ACCELERATION. x x x a t t t t