Question

Help Please<3
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 sec
B. 184.00 Sec
C. 3.54
D. 0.78 sec

Answer 1

when object hit the ground then its height should be =f(t)=0

Answer 2

sorry h(t)=0

Answer 3

Thanks So Much Guys, R U Sure?:)<3
so it would be D?

Answer 4

so
0=-16t^2+200
16t^2=200
t^2=200/16
t=root(200/16)=10*root(2)/4

Answer 5

Humm thats confusing

Answer 6

This is embarrassing>.< i hate math i can never get it:(

Answer 7

okkk

Answer 8

0=-16t^2+200

Answer 9

16t^2=200

Answer 10

u got till here ???
@Monica75

Answer 11

yes

Answer 12

t^2=200/16
t=root(200/16)

Answer 13

t=root(200/16)=3.535=3.54 sec

Answer 14

now ???

Answer 15

@Monica75

Answer 16

OHHH i see !its all simple steps, thanks for showing me! and taking your time out to help

Answer 17

wlcme :)