An experimental magnetic levitation sled is released from rest at the start of a test track and accelerates.

The initial velocity of the sled is $0m/s$. The acceleration of the sled is $4.2{m/s}^2$.

Calculate the final velocity of the sled when it has travelled a distance of $11m$ down the track. Give your answer to 2 significant figures.

Use the equation:

$$v^2-u^2=2as$$

where:

• $v$ is the final velocity
• $u$ is the initial velocity
• $a$ is the acceleration
• $s$ is the distance