Please please help??

A rock is dropped from a tall building. It takes 1.75 seconds for the rock to hit the ground. Find the speed of the rock as it hits the ground, neglecting air resistance.

17.15 m/s
21.15 m/s
39.2 m/s

I dont get this. This is the question but to me, it doesnt seem like there's enough information. Can someone help me please??

Question

Please please help??

A rock is dropped from a tall building. It takes 1.75 seconds for the rock to hit the ground. Find the speed of the rock as it hits the ground, neglecting air resistance.

17.15 m/s
21.15 m/s
39.2 m/s

I dont get this. This is the question but to me, it doesnt seem like there's enough information. Can someone help me please??

anonymous · Answer

You have to the height of the building

anonymous · Answer

How would I do that?

anonymous · Answer

it should of been in the question

anonymous · Answer

Its not tho. Thats what I dont get. Ugh...

anonymous · Answer

I see that and i just went and looked it up you have to hv the height of the building

anonymous · Answer

Ok. Thanks.

anonymous · Answer

No prob