Saturday

August 23, 2014

August 23, 2014

Posted by **cole** on Monday, November 25, 2013 at 6:37pm.

- algebra -
**Reiny**, Monday, November 25, 2013 at 7:06pmheight of penny = -16t^2 + 5t + 4

to reach bottom of well, h = -100

-16t^2 + 5t + 4 = -100

16^2 - 5t -104 = 0

using the formula:

t = appr 2.7 or a negative, which we'll reject

**Related Questions**

Physic - In a dramatic lecture demonstration, a physics professor blows hard ...

math - frank tosses a baseball card into the air. the card lands face up 30 out ...

Science - While Carmen is at the park with her family, she walks up to a wishing...

Science - While Carmen is at the park with her family, she walks up to a wishing...

Physics - A man throws a rock of mass m = 0.310 kg straight up into the air. In ...

algebra 2 - A fair coin is tossed 4 times. Given that each of the first 3 tosses...

two dimensional kinematics - A freight train is moving at a constant speed of Vt...

physics - Carmelita tosses a baseball straight up into the air and it returns to...

physics - ajuggler tosses a ball up in the air with initial speed u. at the ...

Algebra - Drum major tosses the baton into the air from height of 6feet and ...