# A surface probe on the planet Mercury falls 17.6m downward from a ledge. If free-fall acceleration near Mercury is -3.70 m/#s^2#, what is the probe's velocity when it reaches the ground?

##### 1 Answer

Jul 1, 2015

#### Answer:

I fond:

#### Explanation:

We can first find the time it takes to hit the ground (assuming starting with

Now we use:

The minus sign telling us that it is directed dawnwards.