Question

What is the displacement of the dolphin in that time?

Answer 1

Given:

The acceleration of the dolphin is

`a=1.77\text{ m/s}^2`

The time taken by the dolphin is

`t=3.33\text{ s}`

The velocity of the dolphin at the end is

`v=8.77\text{ m/s}`

Required: the displacement of the dolphin

Explanation:

The displacement of the dolphin can be calculated by the third equation of motion. that is given by

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

we assume that the initial velocity of the dolphin is zero u=0.

plugging all the values in the above equation, we get

`\begin{gathered} s=0*3.33\text{ s+}(1)/(2)*1.77\text{ m/s}^2*(3.33\text{ s})^2 \\ s=9.81\text{ m} \end{gathered}`

Thus, the displacement of the dolphin is

`9.81\text{ m}`