advertisement

MOTION- Velocity, Acceleration,graphs

50 %
50 %
advertisement
Information about MOTION- Velocity, Acceleration,graphs
Education

Published on October 15, 2014

Author: sujameryll

Source: slideshare.net

Description

MOTION- Velocity, Acceleration, graphs
advertisement

1. Speed and velocity

2. Learning objectives Students will be able to • Define speed • Define velocity • Calculate speed and velocity

3. WARM UP

4. Speed • Distance moved per second or rate of change of distance • It is scalar quantity • Unit-m/s • Average speed=Distance travelled/time taken

5. Velocity • Velocity measures rate of change of displacement • Average velocity=Displacement/time taken • It is a vector quantity. • Unit- m/s

6. CONTINOUS ASSESSMENT 1.What does the speedometer of a car measure? 2.A car travels a distance of 2oom and returns to the original position after 5min.What is the speed and velocity of the car? 3.What is the eqn. for speed? 4.What is the eqn. for time taken?

7. Final assessment 1.a)Define speed b) Define velocity (page42)

8. HOME WORK • Page.33 Example.2

9. GRAPHS Displacement –time graph a) Body at rest t S t(s) 0 1 2 3 4 S(m) 2 2 2 2 2

10. b)Body moving with steady velocity t s t(s) 0 1 2 3 4 S(m) 0 5 10 15 20 Displacement Gradient= Time Gradient of displacement –time graph gives velocity. Steeper the line ,larger the velocity.

11. c)Accelerating body t 0 1s 2s 3s 4s s 0m 1m 4m 9m 16 a=2m/s² t s Gradient at different time instants are different, as the velocity is changing at every instant. Gradient at any instant gives the instantaneous velocity

12. d)Decelerating body t s

13. Velocity –time graph a) Body moving with steady velocity t v

14. b)Body moving with steady acceleration t v t(s) 0 1 2 3 4 v(m/s) 0 5 10 15 20 acceleration Changeinvelocity • Gradient= Time • Gradient of velocity –time graph gives acceleration. • Steeper the line ,larger the acceleration. 

15. c)Body moving with steady deceleration t v t(s) 0 1 2 3 4 v(m/s) 20 15 10 5 0 Changeinvelocity • Gradient= • Gradient of velocity –time graph gives acceleration. • Steeper the line ,larger the deceleration. acceleration deceleration Time  /

16. Area under the velocity –Time graph gives the displacement Calculate the total displacement of the given body using the given velocity time graph.

17. OA-accelerated motion; Displacement = 100m AB-Steady velocity ; Displacement = 400m BC—decelerated motion; Displacement = 50m Total displacement = 100+400+50=550m

18. Page43. Qn . 8

19. a) acceleration= gradient of OA =change on y/change on x =y2-y1/X2-X1 =2-0/3-0 =2/3 =1.5m/s² b) Decelerates, its velocity becomes zero and it reaches the maximum height. c)At point C the velocity of the lift is zero. The height=Displacement=area under OABC = ½ × 3 × 2 + 6 × 2 + ½ × 3 × 2 =3+12+3=18m. d)The lift starts moving down. First it accelerates in the downward direction.Then it starts decelerating and come to rest e) 18-6=12m

20. PAGE 106

Add a comment

Related presentations

Related pages

Graphs of Motion - The Physics Hypertextbook

Graphs of motion come in several types depending on which of the kinematic ... Let's begin by graphing some examples of motion at a constant velocity.
Read more

Motion Graphs

Motion Graphs. Constant acceleration motion can be characterized by motion equations and by motion graphs. The graphs of distance, velocity and ...
Read more

The Moving Man - Motion, Velocity, Acceleration - PhET

Learn about position, velocity, and acceleration graphs. Move the little man back and forth with the mouse and plot his motion. Set the position, velocity ...
Read more

1. Velocity and Acceleration Graphs - IntMath

1. Velocity (s-t) Graphs Example 1. This general graph represents the motion of a body travelling at constant velocity. The graph is linear (that is, a ...
Read more

What are velocity vs. time graphs? | Acceleration | Khan ...

Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, ... and her motion is given by the velocity graph below.
Read more

Motion Graphs WS - Homestead

Motion Graphs Describing the motion of an object is occasionally hard to do with words. ... Speed-Time graphs are also called Velocity-Time graphs.
Read more

Module 4 -- Graphing Motion and Acceleration vs ...

Module 4 -- Graphing Motion and Acceleration vs ... Recognize or construct a velocity versus time graph ... index.php?title=Module_4_--_Graphing_Motion_and ...
Read more

Meaning of Shape for a v-t Graph - The Physics Classroom

Meaning of Shape for a v-t Graph Meaning of Slope for a v-t Graph Relating the Shape to the Motion Determining the Slope on a v-t Graph Determining the ...
Read more

Position, Velocity, and Acceleration vs. Time Graphs ...

Adjust the Initial Position and the shape of the Velocity vs. Time graph by sliding the points up or down. Watch how the graphs of Position vs. Time and ...
Read more

Velocity/Acceleration Worksheets - mrbartonsclassroom

Velocity/Acceleration Worksheets. Calculating Average Speed. Graph the following data on the grid below and answer the questions at the bottom of the page.
Read more