Question

Physics Velocity and Acceleration WSIName1. Calculate the displacement of a bird that flies east at Sm/s for 30see and then turnsaround, instantaneously, and flies west at 6m/s for 10sec.#1

Answer 1

The velocity of the bird when it was flying eastwards, v₁=8 m/s

The time of flight of the bird when it was flying eastwards, t₁=30 s

The velocity of the bird when it was flying westwards, v₂= 6 m/s

Time of flight of the bird when it eas flying westwards, t₂10 s

The velocity of an object is given by,

`v=(d)/(t)`

Where d is the displacement of the object.

Thus the displacement of the object is,

`d=vt`

Therefore, the displacement of the bird when it was flying eastwards is,

`\begin{gathered} d_1=v_1* t_1 \\ =8*30 \\ =240\text{ m} \end{gathered}`

And the displacement of the bird when it was flying towards the west is,

`\begin{gathered} d_2=v_2* t_2 \\ =6*10 \\ =60\text{ m} \end{gathered}`

Therefore total displacement of the bird can be calculated as,

`D=d_1-d_2`

On substituting the known values,

`D=240-60=180\text{ m}`

Therefore the displacement of the bird is 180 m