Constant Acceleration in Motion
Displacement-time and velocity-time graphs, formulas for constant acceleration, vertical motion under gravity, and practical examples like analyzing a cyclist's journey using average velocity and speed calculations. Diagrams and graphs used with permission from DrFrostMaths.
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Presentation Transcript
Embedded Assessment 3 Juan s Bookcase review
Joe plans to build a bookcase. The case will have four shelves, and each shelf will be 31 feet long. Will Joe have enough lumber if he starts with 16 feet? You could multiply 31 or you could divide 16 by 31 2 2times 4 and see if it is less than 16 2and see if it is at least 4. 1= 7 31 2x 4=7 2x 4 1= 7 2x 4 1x 2 1= 14 1= 14 feet. 16 31 2=16 1 7 2=16 1x 2 7= 32 7= 44 which is more than 4 shelves! 7
Each DVD case is 9 16in wide. If Joe has 80 DVD s, how many will fit on one shelf? You can divide the length of the shelf(in inches) by the width of the DVD. Each shelf was 31 3 x12= 36 + (half a foot) = 6 inches. The total length of the shelf is 42 inches. 9 16= 42 Can you really have 2 74 on a shelf. The other 6 would have to go on another shelf! 2ft. long. How many inches is this? 1x 16 9= 672 9= 74 2 3of a DVD? No! You can put 42 3
How wide would the DVD case have to be in order for all 80 to fit on one shelf? Take the length of the shelf in inches and divide by 80! The shelf was 42 inches, so by 80. 42 80= 42 1 80 1= 42 1x 1 80=21 1x 1 40= 21 40in. To change to feet, x by 1 ft. 12! 21 40x 1 12= 7 40x 1 7 4= 160
