SOLUTION: Mr. Whitney tosses a softball directly upward with an initial velocity of 100 feet per second. Use the formula h = vt � 16t2 to answer each question. a. When the ball reach a heig

Question 725486: Mr. Whitney tosses a softball directly upward with an initial velocity of 100 feet per second. Use the formula h = vt � 16t2 to answer each question.
a. When the ball reach a height a height of 84 feet?
b. When will the ball hit the ground?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Mr. Whitney tosses a softball directly upward with an initial velocity of 100 feet per second. Use the formula h(t) = -16t^2 + vt to answer each question.
-------
a. When the ball reach a height a height of 84 feet?
Solve -16t^2 + 100t - 84 = 0
Ans: x = 1 second and x = 5.25 seconds
---------------------------------------
b. When will the ball hit the ground?
Solve -16t^2 + 100t = 9
t(-16t+100) = 0
t = 100/16 = 6.25 seconds
-------------
Cheers,
Stan H.

RELATED QUESTIONS
Please help!!! Thank you!! Janice tosses a softball directly upward with an intinal (answered by venugopalramana)

A flare is launched from a life raft with an initial upward velocity of 192 feet per... (answered by Earlsdon)

The formula h=-16t^2+vt gives the height h in feet of an object after t seconds when it... (answered by ankor@dixie-net.com)

The formula h=-16t^2+vt gives the height h in feet of an object after t second, when it... (answered by nerdybill,stanbon)

Ethel tosses a softball upward. When the ball leaves her hand 5 feet above the ground it... (answered by ankor@dixie-net.com)

This is the exact equation she gave me: "A child tosses a ball upward with an initial... (answered by Alan3354)

If a rocket is launched with an initial velocity of 1600 feet per second, when will the... (answered by Alan3354)

20. A punter can kick a football with an initial velocity of 48 feet per second. How... (answered by ankor@dixie-net.com)

.A punter can kick a football with an initial velocity of 48 feet per second. How many... (answered by stanbon)