An object is moving across a surface, but it does not gain or lose speed. Which best describes the object’s force?

A) The net force is positive.
B) The net force is zero.
C) The positive force is greater than the negative force.
D) The negative force is greater than the positive force.

The two required components for a generator are

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?