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Chapter 2.1.2

Chapter 2.1.2. Rebound Ratios. Algebra Review:. Find the POI. f(x ) = 1.5x 2 - 9x + 11.5 g(x ) = -0.2x 2 - 0.4x + 2.8. Find the missing terms and write a rule for each exponential function. How High Will It Bounce?.

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Chapter 2.1.2

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  1. Chapter 2.1.2 Rebound Ratios

  2. Algebra Review: • Find the POI. f(x) = 1.5x2- 9x + 11.5 g(x) = -0.2x2- 0.4x + 2.8

  3. Find the missing terms and write a rule for each exponential function.

  4. How High Will It Bounce? • Many games depend on how a ball bounces. For example, if different basketballs rebound differently, one basketball would bounce differently off of a backboard than another would, and this could cause basketball players to miss their shots. For this reason, manufacturers have to make balls’ bounciness conform to specific standard. • Listed on the next slides are the “bounciness” standards for different kinds of balls.

  5. 2-20 continued • Tennis Balls: Must Rebound approximately 111 cm when dropped from 200 cm. What is the rebounding ratio? • Soccer balls: Must rebound approximately 120 cm when dropped from 200cm onto a steel plate. What is the rebounding ratio?

  6. NOW DETERMINE THE REBOUNDING RATIO FOR THE FOLLOWING BALLS. Basketballs: Must rebound approximately 53.5 inches when dropped from 72 inches onto a wooden floor. Squash Balls: Must rebound approximately 29.5 inches when dropped from 100 inches onto a steel plate at 70 degrees Fahrenheit.

  7. A new bouncing ball • Plot these values. • Should the points be connected? • Describe the independent variable • Describe the dependent variable. • State the equation to fit the data. • Should point (0,0) be included?

  8. On your own • Read and take notes on • Methods and Meanings • Page 62 Do Review and Preview Pg 62 #26-29 and 37-41

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