A football is kicked down a field. Describe what happens to its horizontal and vertical velocities as it moves through the air.

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

What sort of waves exhibit the doppler effect?

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?