High Dive                 Free Fall            How long does it take?                 Name _______________________

 

Day 10

 

 

1.         We will be solving for t because we know how to find how high the person is above the ground. 

 

Once we know the height , substitute the height for d(t) and solve for t.

 

Example:  How long would it take for the person to hit the ground from 120 feet off the ground?

 

           a.  How long will it take to hit the ground from 130 feet?

 

 

 

 

 

            b.  How about 57 feet?

 

 

 

 

                                 c.  88 feet?

 

 

2.         Now add the first part of the process.      How long would it take to hit the ground from our Ferris wheel at:

 

a.         11 o’clock?

 

 

 

 

b.         10 o’clock?

 

 

 

 

c.          8 o’clock?

 

 

 

 

d.          7 o’clock?

 

3.         Again, using our Ferris wheel information, how long would it take to hit the ground after :

 

a.          21 seconds of rotation?

 

 

 

 

 

b.         30 seconds of rotation?

 

 

 

 

 

c.         47 seconds of rotation?

 

 

 

 

 

d.          135 seconds of rotation?

 

 

 

4.         What would be the total travel time ( wheel plus free-fall) for a person on our Ferris wheel after a :

 

a.         25 seconds of rotation?

 

 

 

 

b.         17 seconds?

 

 

 

 

c.         30 seconds?

 

 

 

 

d.         51 seconds?