During an experiment, a ball is dropped from a height of 205 feet. The formula h = -16t2 + h subscript 0 can be used to approximate the number of seconds t it takes for the ball to reach height h from an initial height of h subscript 0 in feet. Find the time it takes the ball to reach the ground.

4 seconds

Step-by-step explanation:

where h=height reached after t seconds

          = Initial Height of the ball

The ball is dropped from a height of 205 feet,

= 205 feet

We want to determine the time it takes the ball to reach the ground.

i.e. when height of the ball, h=0

Substituting = 205 feet and h=0 into the formula

Add to both sides

Divide both sides by 16

≈ 4 Seconds

It takes approximately 4 seconds for the ball to reach the ground.

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5