- #1

MiniOreo1998

- 18

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## Homework Statement

For each function, find an expression for the velocity and the value of the displacement and velocity at t=5. Displacement is in metres and time is in seconds.

## Homework Equations

A)[/B] s(t) = 3t + 7

**B)**s(t) = t

^{3}- 2t

^{2}+ 4t - 1

## The Attempt at a Solution

A) [/B]s(t) = 3t + 7

s(5) = 3(5) + 7

= 22 m/s

**B)**s(t) = t

^{3}- 2t

^{2}+ 4t - 1

s(5) = 5

^{3}- 2(5) + 4(5) - 1

=94 m/s