# Time to reach maximum height

## Homework Statement

find time to reach max height
max height is 0.870m
mass of diver is 70kg
makes an angle when diving of 85 degrees

Vf=Vi + gt

## The Attempt at a Solution

Vi=0
Vf=gt
t=vf/g
= 0.870/9.8

not sure if this the right approach

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When somebody is "diving", the direction is generally downward. One cannot reach a max height moving downward. State the problem correctly and fully, it is in your interest to eliminate any guesswork for us.

so when the person is diving from a diving board, it jumps upward before diving downwards into the water

So in fact the question is about jumping, not diving?

Then, when you say "makes an angle" - makes an angle WITH WHAT?

so im assuming the height of the diver? which is 1m , theres all the information given

OK, assuming the angle is with the vertical.

In your attempt, why does ##v_i = 0##? Surely when somebody jumps, they have a non-zero velocity initially?