Quadratic word problems, and choosing a method
Grade 9 Math Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
Esme tosses a striped play ball up at 56 feet per second from the ground: h = -16t² + 56t. When is it 40 feet high for the first time, in seconds?
Jun kicks a soccer ball up at 64 feet per second: h = -16t² + 64t. When is it 48 feet high for the second time, in seconds?
Kira launches a toy foam rocket at 80 feet per second: h = -16t² + 80t. When is it 64 feet high for the first time, in seconds?
Luz tosses a basketball up at 72 feet per second: h = -16t² + 72t. When is it 56 feet high for the second time, in seconds?
Pia's garden is 10 by 6 meters, with a path x meters wide all around. Garden and path cover 96 square meters. How wide is x?
Ren's 16 by 10 foot rug has an even strip of bare floor x feet wide all around it. Rug and strip cover 280 square feet. How wide is x?
Zee times a play ball a presenter drops from a 25 m tower into a net: h = -4.9t² + 25. To the nearest tenth, after how many seconds does it land?
In a science video Ari watches, a pebble drops from a 45 m bridge into a river: h = -4.9t² + 45. To the nearest tenth, after how many seconds does it land?
Bo times a water balloon a teacher drops from a 30 m tower onto grass: h = -4.9t² + 30. To the nearest tenth, after how many seconds does it land?
For an egg-drop project, Esme times a padded box a teacher drops from a 12 m balcony: h = -4.9t² + 12. To the nearest tenth, after how many seconds does it land?
