How High Does a Coin Tossed Straight Up Reach?

[student54321]

Homework Statement

A coin tossed straight up into the air takes
2.75 s to go up and down from its initial
release point 1.30 m above the ground.

What is its maximum height?

Homework Equations

The Attempt at a Solution

I seriously have no clue how to do this problem. I really need a detailed explanation with steps. I'm sorry if this doesn't abide by your question standards, but I really mean I have 0 idea how to solve this problem, and I really need some help.


Thanks.

 

[student54321]

can anyone help?

 

[Rayquesto]

its 1.30 + V0^2/2g

since V^2=V0^2 + 2g(ay) where the max height is when V=0

 

[Rayquesto]

where V0=g(2.75/2) since V= V0 + gt where V=0m/s since you are accounting for the time it takes and the velocity at the point it goes its max height.