Distance Time Graphs Position Time Graphs Linear dt

Distance -Time Graphs Position -Time Graphs Linear d/t graphs

Quantities O Scalar- A quantity with magnitude only Examples: O Vector- A quantity with magnitude and direction(can be a negative number) Examples:

Terms O Distance-Separations between two points O Position-Object’s placement with respect to a reference point O Displacement-change in position of an object. Formula(df – di ) O Speed-distance an object travels over time O Velocity- is speed and a direction(change in position over time)

Information that can be determined from d/t graphs O 1. Distance = Just read it off the graph 40 35 30 d(m) 25 20 Series 1 15 10 5 0 0 2 4 t(s) 6 8 10

Info continued O 2. Slope of a d/t = average speed or velocity. Pay attention to what object is doing…. Formula is 40 35 30 d(m) 25 20 Series 1 15 10 5 0 0 2 4 t(s) 6 8 10

120 100 80 d(m) 60 Series 1 40 20 0 0 2 4 6 Time(s) 8 10

O 3. Instantaneous Speed =Cannot be determined using a position time graph unless object is moving at constant speed. 120 100 80 d(m) 60 Series 1 40 20 0 0 2 4 6 Time(s) 8 10

Non Linear d/t Graphs O Distance-Read it off the graph 160 140 120 d(m) 100 80 Series 1 60 40 20 0 0 1 2 3 4 5 Time(s) 6 7 8 9

Non Linear d/t graphs Slope must be determined by a tangent to the curve 160 140 120 d(m) 100 80 Series 1 60 40 20 0 0 2 4 6 Time(s) 8 10

O 3. Instantaneous Speed =Can only be done with a tangent to the curve. 160 140 120 d(m) 100 80 Series 1 60 40 20 0 0 2 4 6 Time(s) 8 10

Fundamental Units in Physics O O O O O Mass. Kilograms Time. Seconds Length – Meters Accelerationm/s 2 Units for speed or velocity Km/hr-kilometers per hour m/s- meters per second

Calculating Speed (Velocity)

Velocity Word Problems O A car travels 6. 02 m in 3. 50 sec. What is the car’s velocity? O A dog chases a rabbit at 3. 42 m/s for 8. 63 m. How much time did this take the dog?

O Ms. Polasek travels from her room at 3. 02 m/s for 12. 3 s. How far did she travel?