What are the things ships tie up to at dock?

What object a collides with object b and bounces back its final momentum is?

Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.

Which of the following best describes the circuit shown below?