- #1

mimi.janson

- 80

- 0

## Homework Statement

A ball is trown vertically straight up in the air. After t seconds the ball has reached the higth

Question : after how many sconds is the ball back to the spot it was trown from ?

## Homework Equations

I have figured out that i need to differentate.

## The Attempt at a Solution

So i thought i had to solve it this was :

60t – 5t

^{2 }--> 60-10t but it seems like this isn't the answer

besides i have made a drawing of the information i got . The orange line shows how the ball is thrown straight up, and the blue shows that i have to solve how much that and the orange are when they are added when reffereing to time in seconds .

#### Attachments

Last edited: