Thursday

July 24, 2014

July 24, 2014

Posted by **Andy G** on Tuesday, January 14, 2014 at 9:15pm.

a. draw the illustration.

b. for what time interval is ball more than 96 ft above ground?

c. what's the max height of ball?

d. after how many seconds does the ball reach max height?

- Pre-Calc -
**Henry**, Wednesday, January 15, 2014 at 3:40pmb. d = 80t - 16t^2 = 96

-16t^2 + 80t - 96 = 0

Divide both sides by 16:

-t^2 + 5t - 6 = 0

Use Quadratic Formula and get:

t = 2s, and 3 s.

Interval: 2< T <3.

c. h = (V^2-Vo^2)/2g

h = (0-80^2)/64 = 100 Ft.

d. V = Vo + g*t = 0 at max ht.

t = -Vo/g = -80/-32 = 2.50 s.

**Related Questions**

pre-calc - Physics: a ball is thrown vertically upward with an initial velocity ...

Math: Word Problem - A ball is thrown upward from the top of a building which is...

calculus - if a ball is thrown vertically upward with an initial velocity of 48 ...

CALCULUS - if a ball is thrown vertically upward with a velocity of 80m/s then ...

calculus - If a ball is thrown vertically upward with a velocity of 160 ft/s, ...

Algebra - If a ball is thrown vertically upward from a height of 56ft. above ...

Intermediate algebra - If a ball is thrown vertically upward from the ground, ...

Algebra 2 - If an object is thrown vertically upward with an initial velocity of...

Algebra - If an object is thrown vertically upward with an initial velocity of ...

Math- - A ball is thrown vertically upward with an initial velocity of 96 feet ...