Cupid fires a 135-gram arrow, moving at 30 m/s, into a stationary 1 kg heart-shaped box of chocolates. The arrow emerges (the arrow does not get embedded (or stuck) in the box)
with half of its original speed. Find the change in the kinetic energy of the system before
and after the collision.

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion