- #1

Ahmad Hossain

- 29

- 2

## Homework Statement

A windscreen is dirty and a bird dropped something which hits perpendicular your windscreen (Which has an inclination angel 40°). By comparison with the height of your house you know the flight height of the bird quite well. 10 m above your car. Determine the Horizontal flight velocity of the bird? we are ignoring friction... Find out also...Time for falling 15m... Vertical velocity after dropping 15m...Required Horizontal velocity[/B]

## Homework Equations

and attemptTime for free fall after dropping 15m

y= Vot - 0.5 x 9.81 t^2 (g= -9.81m/s2) (y=15m) (Vo= initial velocity is 0)

t= 3s. ( by calculation)

Vertical velocity after dropping 15m...

v= Vo + gt

= 0 + 9.81 m/s^2 X 3s

= 29.43s[/B]

## The Attempt at a Solution

but I think my method is wrong.

I can use also by this way,

Horizontal velocity Vx = Vxo

Vertical velocity Vy = Vyo - gt

Basically i am not sure that my method to solve the question is ok [/B]