Abullet is fired through a 14.0 cm thick board, with its line of motion perpendicular to the face of the board. if it enters with a speed of 450 m/s and emerges 220m/s, what is the bullet’s acceleration as it passes through the board?

What are igneous intrusions and extrusions

Atomic nuclei of almost all elements consist of

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.