If it actually hits the ground with a speed of 8.50 m/s , what is the magnitude of the average force of air resistance exerted on it?

What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight