An-Intro-to-Acceleration：介紹了以加速度-課件

1、Graphing Displacement and VelocityGiven the position-time graph at right,When is the object travelling forward?A. 0 25 sB. 10 25 sC. 10 30 sWhen is the object travelling backward?A. 30 45 sB. 30 60 sC. 45 60 sWhen is the object travelling at the greatest speed?A. 10 25 sB. 25 30 sC. 30 45 sGraphing

2、Displacement and VeloGraphing Displacement and VelocityGiven the position-time graph at right,When is the object travelling forward?A. 0 25 sB. 10 25 sC. 10 30 sWhen is the object travelling backward?A. 30 45 sB. 30 60 sC. 45 60 sWhen is the object travelling at the greatest speed?A. 10 25 sB. 25 30

3、 sC. 30 45 sGraphing Displacement and VeloGraphing Displacement and VelocityGiven the position-time graph at right,When is the object travelling forward?A. 0 25 sB. 10 25 sC. 10 30 sWhen is the object travelling backward?A. 30 45 sB. 30 60 sC. 45 60 sWhen is the object travelling at the greatest spe

4、ed?A. 10 25 sB. 25 30 sC. 30 45 sGraphing Displacement and VeloGraphing Displacement and VelocityGiven the position-time graph at right,When is the object travelling forward?A. 0 25 sB. 10 25 sC. 10 30 sWhen is the object travelling backward?A. 30 45 sB. 30 60 sC. 45 60 sWhen is the object travellin

5、g at the greatest speed?A. 10 25 sB. 25 30 sC. 30 45 sGraphing Displacement and VeloAn Introduction to AccelerationSPH3UAn Introduction to AcceleratioAn Introduction to Acceleration: Learning GoalThe student will interpret and solve example questions related to uniformly accelerated motion. (B3.2)Vo

6、cabulary: acceleration (B2.1)An Introduction to AcceleratioAccelerationAcceleration is defined as the change in the velocity of an object per interval of time, or:AccelerationAcceleration is deAccelerationAcceleration is defined as the change in the velocity of an object per interval of time, or:Acc

7、elerationAcceleration is deAccelerationAcceleration is defined as the change in the velocity of an object per interval of time, or:AccelerationAcceleration is deAccelerationAcceleration is defined as the change in the velocity of an object per interval of time, or:v2 = final velocity and v1 = initia

8、l velocityAccelerationAcceleration is deAccelerationAcceleration will have units of m/s/s or m/s2.(Notice also that acceleration is a vector.)AccelerationExampleJake increases his velocity from 13 m/s E to 25 m/s E in 5.0 s. What is his acceleration?ExampleJake increases his veloExampleJake increase

9、s his velocity from 13 m/s E to 25 m/s E in 5.0 s. What is his acceleration?ExampleJake increases his veloExampleJake increases his velocity from 13 m/s E to 25 m/s E in 5.0 s. What is his acceleration?ExampleJake increases his veloExampleJake increases his velocity from 13 m/s E to 25 m/s E in 5.0

10、s. What is his acceleration?ExampleJake increases his veloExampleJake increases his velocity from 13 m/s E to 25 m/s E in 5.0 s. What is his acceleration?His acceleration is 2.4 m/s2 E.ExampleJake increases his veloAnother ExampleRichard reduces his velocity from 15 m/s forward to 12 m/s forward in

11、4.0 s. What is his acceleration?Another ExampleRichard reducesAnother ExampleRichard reduces his velocity from 15 m/s forward to 12 m/s forward in 4.0 s. What is his acceleration?Another ExampleRichard reducesAnother ExampleRichard reduces his velocity from 15 m/s forward to 12 m/s forward in 4.0 s.

12、 What is his acceleration?Another ExampleRichard reducesAnother ExampleRichard reduces his velocity from 15 m/s forward to 12 m/s forward in 4.0 s. What is his acceleration?His acceleration is 0.75 m/s2 backward.Another ExampleRichard reducesRearranging the EquationThe equation that represents the d

13、efinition of acceleration may be rearranged to solve for any of the other variables, e.g.Rearranging the EquationThe eqRearranging the EquationA ball is travelling at 12 m/s up and being accelerated at 9.8 m/s2 down. What is its velocity after 2.0 s?Rearranging the EquationA ballRearranging the Equa

14、tionA ball is travelling at 12 m/s up and being accelerated at 9.8 m/s2 down. What is its velocity after 2.0 s?Rearranging the EquationA ballRearranging the EquationA ball is travelling at 12 m/s up and being accelerated at 9.8 m/s2 down. What is its velocity after 2.0 s?Rearranging the EquationA ballRearranging the EquationA ball is travelling at 12 m/s up