Test Review  Page 296    Definitions of quantities  Pg. 320- 323    Question 2 (329) Pg. 354 – 356    Question 3 (358)
<ul><li>Slope =  y /  x  </li></ul><ul><li>Slope =  distance /  time  </li></ul>Average Speed = m/s  Distance vs. Time gra...
Distance vs. Time graphs  A car’s Motion
 
<ul><li>During which interval is the cars average speed the greatest? </li></ul><ul><li>0-2 s  </li></ul><ul><li>2-4 s </l...
<ul><li>2. Calculate the average speed of the car from 4s to 6s ? </li></ul><ul><li>3. Use the graph and describe the cars...
Questions about Average Speed <ul><li>Sarah backstrokes at an average speed of 8 m/s , how long will it take her to comple...
Distance Vs. Time Graph
Position vs. Time graphs  <ul><li>Slope =  y /  x  </li></ul>Av . Velocity=  d (change in pos)/  t  =m/s (direction)
Direction!
<ul><li>During which time intervals is the object stationary? </li></ul><ul><li>0-2 s  </li></ul><ul><li>4-6s </li></ul><u...
<ul><li>2. What is the average velocity of the car between 8 s and 10 s? </li></ul><ul><li>3. When is the cars average vel...
Write a description about the motion that graphs might describe
Velocity Questions  <ul><li>A student walks 2.5 km (E) and then 5.9 km ( S) in 2 hr. Calculate the average velocity </li><...
Acceleration = a  <ul><li>  Accel.= change in velocity / change in  time </li></ul><ul><li>a  =  v  /  t  </li></ul><ul><l...
Sample Problem  <ul><li>A train starts from rest, and accelerates to a final velocity of 500 m/s (E) in a time of  180 s. ...
A car travelling at a velocity of 30 m/s (S) encounters an emergency and comes to a stop. How much time will it take for t...
Upcoming SlideShare
Loading in …5
×

physics

325 views

Published on

science

Published in: Technology, Education
  • Be the first to comment

  • Be the first to like this

physics

  1. 1. Test Review Page 296  Definitions of quantities Pg. 320- 323  Question 2 (329) Pg. 354 – 356  Question 3 (358)
  2. 2. <ul><li>Slope = y / x </li></ul><ul><li>Slope = distance / time </li></ul>Average Speed = m/s Distance vs. Time graphs
  3. 3. Distance vs. Time graphs A car’s Motion
  4. 5. <ul><li>During which interval is the cars average speed the greatest? </li></ul><ul><li>0-2 s </li></ul><ul><li>2-4 s </li></ul><ul><li>4-6 s </li></ul><ul><li>6-8 s </li></ul>How can you tell?
  5. 6. <ul><li>2. Calculate the average speed of the car from 4s to 6s ? </li></ul><ul><li>3. Use the graph and describe the cars motion during the trip </li></ul>
  6. 7. Questions about Average Speed <ul><li>Sarah backstrokes at an average speed of 8 m/s , how long will it take her to complete 200 m race? </li></ul><ul><li>Laurens SUV was found speeding at a 60 km/hr zone. How many km/hr is she travelling over the speed limit if she covered a distance of 10km in 5 minutes? </li></ul>
  7. 8. Distance Vs. Time Graph
  8. 9. Position vs. Time graphs <ul><li>Slope = y / x </li></ul>Av . Velocity= d (change in pos)/ t =m/s (direction)
  9. 10. Direction!
  10. 11. <ul><li>During which time intervals is the object stationary? </li></ul><ul><li>0-2 s </li></ul><ul><li>4-6s </li></ul><ul><li>6-8 s </li></ul><ul><li>8-10s </li></ul>How do you know quantitavely?
  11. 12. <ul><li>2. What is the average velocity of the car between 8 s and 10 s? </li></ul><ul><li>3. When is the cars average velocity the greatest? </li></ul><ul><li>4. Using the graph, describe the cars overall average velocity during its trip </li></ul>
  12. 13. Write a description about the motion that graphs might describe
  13. 14. Velocity Questions <ul><li>A student walks 2.5 km (E) and then 5.9 km ( S) in 2 hr. Calculate the average velocity </li></ul><ul><li>2. A dog runs 1.3 m (N) and turns around and runs 4 m (S) in 20 min. What is the dogs average velocity? </li></ul>
  14. 15. Acceleration = a <ul><li>  Accel.= change in velocity / change in time </li></ul><ul><li>a = v / t </li></ul><ul><li>(How fast you change how fast you are going!) </li></ul><ul><li>Vector = Magnitude (size) + Direction </li></ul><ul><li>  Units: m/s 2 </li></ul>
  15. 16. Sample Problem <ul><li>A train starts from rest, and accelerates to a final velocity of 500 m/s (E) in a time of 180 s. Calculate the trains acceleration </li></ul>
  16. 17. A car travelling at a velocity of 30 m/s (S) encounters an emergency and comes to a stop. How much time will it take for the car to stop if it decelerates at –4.0 m/s 2

×