For an answer to be complete the units need to be specified. why?

Sound is a disturbance that travels through a medium as a

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader