- #1

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- Homework Statement
- Please see below

- Relevant Equations
- Please see below

For this,

The solution to (a)(i) is 0 ft/s. However I got -4 ft/s.

The formula I used was,

##v_{avg} = \frac{s_f - s_i}{t_f - t_i}##

##v_{avg} = \frac{\frac{1}{2}t^2_f - 6t_f + 23 - \frac{1}{2}t^2_i - 6t_i + 23}{t_f - t_i}##

##v_{avg} = \frac{ \frac{1}{2}(t^2_f - t^2_i) - 6(t_f - t_i)}{t_f - t_i}##

If someone could please point out what I did wrong, that would be much appreciated.

Many thanks!

The solution to (a)(i) is 0 ft/s. However I got -4 ft/s.

The formula I used was,

##v_{avg} = \frac{s_f - s_i}{t_f - t_i}##

##v_{avg} = \frac{\frac{1}{2}t^2_f - 6t_f + 23 - \frac{1}{2}t^2_i - 6t_i + 23}{t_f - t_i}##

##v_{avg} = \frac{ \frac{1}{2}(t^2_f - t^2_i) - 6(t_f - t_i)}{t_f - t_i}##

If someone could please point out what I did wrong, that would be much appreciated.

Many thanks!