Which type of wave cannot have crests and troughs? a. surface b. transverse c. mechanical d. longitudinal

What is the final velocity of the initial velocity of 25 and -50?

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?