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sp3sp2sp

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## Homework Statement

A 10 g bullet traveling at 370 m/s strikes a 8.0 kg , 0.80-m-wide door at the edge opposite the hinge. The bullet embeds itself in the door, causing the door to swing open.

What is the angular velocity of the door just after impact?

Express your answer to two significant figures and include the appropriate units.

## Homework Equations

use conservation of momentum for slab about edge: linear momentum = angular momentum

mv = Iw

I = (1/3)ML^2 (for a slab)

w = (3mv) / (ML^2)

(w = omega)

3. The Attempt at a Solution

3. The Attempt at a Solution

w = (3mv) / (ML^2)

w = (3* 0.01kg * 370m/s) / (8.0kg * 0.80kg^2)

w = 2.167 = 2.2 rad/s

= wrong

cant see what I am doing wrong, thanks for any help