1. Sergio Estrada Riverside High School
Kinematics
Sergio Estrada
Riverside High School

2. Scalar vs. Vector
Scalar just have a magnitude (fancy word for number).
NO direction. Does not have negative values
70 lb
60 mph
100 km/hr
Vectors have magnitude with direction. Can be negative to denote direction.
100 m/s south
50 N left
-50 m/s2

3. Displacement
Displacement is how far an object has moved. Displacement is the shortest distance from the objects starting point to its end point. The path taken is not important.
Distance travelled is the total distance an object travels. Distance travelled can be different from the displacement. Distance travelled takes into account the whole path taken.

5. Displacement graphed

6. Velocity
Velocity is the change in position of an object over a period of time. It is denoted by units of distance/unit of time.
Velocity is a vector so it can be negative or positive. Negative velocity tells you you are going in the opposite direction at a certain speed.
Slope of position graph is the velocity at that point
Area under velocity curve gives you the displacement
Speed is the magnitude (fancy word for number and important to know) of how fast an object is moving without taking into account direction.

7. Velocity Graphed

8. Acceleration
Acceleration is the change in position of an object over a period of time. It is denoted by units of distance/unit of time.
Acceleration is a vector so it can be negative or positive. Negative acceleration tells you the acceleration is toward the left.
Slope of velocity graph is the acceleration at that point
Area under acceleration curve gives you the velocity

9. Velocity and Acceleration Relationships+
Speeding up -
Slowing down

11. How to solve kinematic problems

12. Guess method Given. Write down what values you are given
Unknown. Identify what is unknown and what you are looking for
Equation. Find what equation you will be using
Substitution. Substitute given values into equation you have been given.
Solve. Solve for unknown values

13. The Big Five