If an object is dropped from a height of 200 feet, the function h(t)=-16t^2+200 gives the height of the object after t seconds. Approximately, when will the object hit the ground?
A.200.00 Seconds
B.184.00 Seconds
C.3.54 Seconds
D. 0.78 seconds

Question

If an object is dropped from a height of 200 feet, the function h(t)=-16t^2+200 gives the height of the object after t seconds. Approximately, when will the object hit the ground?
A.200.00 Seconds
B.184.00 Seconds 
C.3.54 Seconds 
D. 0.78 seconds

anonymous · Answer

Really need help!

anonymous · Answer

The object hits the ground at time $t$ that makes the height zero. Solve for $t$:
$$-16t^2+200=0$$

anonymous · Answer

No clue man.

anonymous · Answer

$$16t^2=200~~\iff~~t^2=\frac{200}{16}$$

anonymous · Answer

Problem Is in not very smart.

anonymous · Answer

And I'm not a particularly patient person.

anonymous · Answer

You should review your algebra.