# Question #cdc14

##### 1 Answer

(B)

#### Explanation:

Let

We know from general expression that

Since the object falls from rest,

Equation becomes

It is given that object covers half of the distance in the last second. It implies that it covers first half of the distance in

We obtain

Dividing equation (1) by (2)

We obtain

or

or

Using the quadratic formula for finding roots

or

or

or

Considering

We observe that

You made a correct choice.