Kelsey jumps from a diving board, springing up into the air and then dropping feet-first. The distance d in the feet to the pool's surface t seconds after she jumps is d= -16t^2 + 18t + 10.

a. What is the maximum height of Kelsey's feet during this jump? When does the maximum height occur?

b. When do Kelsey's feet hit the water?

c. What does the constant term 10 in the equation tell you about Kelsey's jump?

Question

Kelsey jumps from a diving board, springing up into the air and then dropping feet-first. The distance d in the feet to the pool's surface t seconds after she jumps is d= -16t^2 + 18t + 10.

a. What is the maximum height of Kelsey's feet during this jump? When does the maximum height occur?

b. When do Kelsey's feet hit the water?

c. What does the constant term 10 in the equation tell you about Kelsey's jump?

anonymous · Answer

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