- #1

Physics08

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## Homework Statement

A bullet traveling horizontally at a speed of 350 m/s hits a board perpendicular to the surface, passes through it, and it emerges on the other side at a speed of 210 m/s. If the board is 4 cm thick, how long does the bullet take to pass through it (in seconds)?

## Homework Equations

X(t) = Vt + x(i)

## The Attempt at a Solution

My problem is not knowing which formula to use. Thank you