# A ball is dropped off a ledge... (Physics)

• June 14th 2009, 03:16 PM
iamanoobatmath
A ball is dropped off a ledge... (Physics)
Quote:

A ball is dropped off a ledge How far does it fall in the 2nd second?
The answer is 14.7 meters.
Could someone explain why it's 14.7? Shouldn't it be 19.6 meters?
• June 14th 2009, 03:25 PM
Jhevon
Quote:

Originally Posted by iamanoobatmath
The answer is 14.7 meters.
Could someone explain why it's 14.7? Shouldn't it be 19.6 meters?

apparently by "in the 2nd second" it means "between time = 1 second and time = 2 seconds"

that yields the desired answer.

the question was vaguely posed.
• June 14th 2009, 03:25 PM
Soroban
Hello, iamanoobatmath!

There's nothing wrong with your math,
. . but you misread the problem.

Quote:

A ball is dropped off a ledge.
How far does it fall in the 2nd second?

They want the distance it fell during the 2nd second
. . . . . between $t=1$ and $t = 2$.

(Yes, I agree . . . very sneaky!)
.