Foundations of Math 11 WCLN.ca 4. When a football is kicked with a vertical speed of...
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Foundations of Math 11 WCLN.ca 4. When a football is kicked with a vertical speed of 20 m/s, its height (h) after t seconds is approximated by the formula: h= 20t-St². How long after the kick is the football at a height of 15 m? (There will be 2 answers.) 5. One of the games at a carnival involves trying to ring a bell with a ball by hitting a lever that propels the ball into the air. The height of the ball is modeled by the equations h(t) = -16t² + 39t. If the bell is 25 ft above the ground, will it be hit by the ball? 6. A diver is standing on a platform 24 ft above the pool. He jumps from the platform with an initial upward velocity of 8 ft/s. Use the formula h(t) = -16t2 + vt +s, where h is his height above the water, t is the time, v is his starting upward velocity and s is his starting height. a) Substitute the starting height and velocity into the formula. b) How long will it take for the diver to hit the water? Foundations of Math 11 WCLN.ca 4. When a football is kicked with a vertical speed of 20 m/s, its height (h) after t seconds is approximated by the formula: h= 20t-St². How long after the kick is the football at a height of 15 m? (There will be 2 answers.) 5. One of the games at a carnival involves trying to ring a bell with a ball by hitting a lever that propels the ball into the air. The height of the ball is modeled by the equations h(t) = -16t² + 39t. If the bell is 25 ft above the ground, will it be hit by the ball? 6. A diver is standing on a platform 24 ft above the pool. He jumps from the platform with an initial upward velocity of 8 ft/s. Use the formula h(t) = -16t2 + vt +s, where h is his height above the water, t is the time, v is his starting upward velocity and s is his starting height. a) Substitute the starting height and velocity into the formula. b) How long will it take for the diver to hit the water?
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