Astone is thrown straight up. when it reaches it’s highest point, a) both its velocity and acceleration are zero b) its velocity is zero and acceleration is not zero c) its velocity is not zero and its acceleration is zero d) neither its velocity nor acceleration is zero

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

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 an aquifer for science class