4. A player hits a ball with a bat. The action force is the impact of the bat against the ball. The reaction force is … A. The grip of the players hands on the ball
B. The air resistance on the ball
C. The force of the ball against the bat

Why???

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

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?

What is similar between metals and suspensions