SSU Seminar Activity

State what is the independent variable of the experiment of drop height versus time of a free-falling body.

• horizontal displacement

• drop height

• time of fall

• acceleration due to gravity

State what is the dependent variable of the experiment of drop height versus time of a free-falling body.

• acceleration due to gravity

• horizontal displacement

• drop height

• time of fall

What is the slope of the graph and y-intercept from the equation of displacement below? s = ½ gtˆ2

• slope = time of fall, y-intercept = horizontal displacement

• slope = time of fall, y-intercept = acceleration due to gravity

• slope = acceleration due to gravity/2, y-intercept = zero

• slope = drop height, y-intercept = time of fall

Based on the equation below, what is the value of the acceleration due to gravity (g)? s = ½ gtˆ2

• g = 2 x slope

• g = slope

• g = 4 x slope

• g = displacement x time squared

From your graph of drop height vs. time of fall squared of a falling body, state what relationships you have identified.

• The acceleration due to gravity is inversely proportional to time squared.

• The acceleration due to gravity is directly proportional to time squared.

• The drop height is directly proportional to time squared.

• The acceleration due to gravity is inversely proportional to the time of fall.

How would you measure the percent accuracy of your acceleration due to gravity value?

• (measured value-9.81)/9.81 x 100%

• (measured value-9.81)/measured value x 100%

• (accepted value-9.81)/9.81 x 100%

• (measured value-9.81)/measured value x 100%

State what is the independent variable of the experiment of drop height versus bounce height of the Ping-Pong ball.

• the efficiency of the Ping-Pong Ball

• bounce height

• acceleration due to gravity

• drop height

State what is the dependent variable of the experiment of drop height versus bounce height of the Ping-Pong ball.

• acceleration due to gravity

• the efficiency of the Ping-Pong Ball

• bounce height

• drop height

1.    From equation 5 below, state the slope and y-intercept of the equation.
efficiency = (bounced height/drop height) x 100%

• Slope = drop height, y-intercept = zero

• Slope = efficiency, y-intercept = zero

• Slope = bounce height, y-intercept = drop height

• Slope = efficiency, y-intercept =. Bounce height

From your graph of bounce height vs. drop height, state what relationships you have identified.

• The slope is directly proportional to the bounce height

• The drop height is directly proportional to the bounce height

• The slope is directly proportional to the drop height

• The unit of measure of the slope is m².