Question

3. A sprinter leaves the starting blocks with an acceleration of 4.5 m/s2. What is the

final velocity of the sprinter after 4 seconds?
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Answer 1

Hi there! :)

`\large\boxed{v_(f) = 18 m/s}`

Use the following kinematic equation to solve for the final velocity:

`v_(f) = v_(i) + at`

In this instance, the runner started from rest, so the initial velocity is 0 m/s. We can rewrite the equation as:

`v_(f) = at`

Plug in the given acceleration and time:

`v_(f) = 4.5 * 4 = 18 m/s`