A70 kg bicyclist is coasting down a long hill with a 5.1 degree slope. he's moving quite rapidly, so air drag is important. his cross-section area is 0.32 m^2 and his drag coefficient is 0.88. what speed does he eventually reach in mph?

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.