Question

2. A bird flying horizontally at 10 m/s drops a branch. The bird is flying at an altitude of 20 m. Determine

the horizontal displacement it moves relative to where it was dropped.

Answer 1

The horizontal displacement is 20 m.

Step-by-step explanation:

Given that,

Velocity = 10 m/s

Height = 20 m

We need to calculate the time

Using equation of motion

`s=ut+(1)/(2)gt^2`

Put the value into the formula

`20=0+(1)/(2)*9.8* t^2`

`t^2=(20*2)/(9.8)`

`t=\sqrt{(20*2)/(9.8)}`

`t=2.0\ sec`

We need to calculate the horizontal displacement

Using formula of horizontal displacement

`\Delta x=v_(x)* t`

Put the value into the formula

`\Delta x=10*2.0`

`\Delta x=20\ m`

Hence, The horizontal displacement is 20 m.