1.  What is the force on a 1 kg ball that is falling freely due to the acceleration of gravity.
 
 

    2.  A man has a mass of 66 kg on the Earth.  What is his weight?
 
 
 

    3.  A person weighs 540N on Earth
            a.  What is the person's mass?
 
 
 

            b.  What would the person weight on the moon where the acceleration due to gravity is 1.67 N/kg?
 
 
 
 

    4.  An astronaut has a mass of 50 kg.
                a.  How much does she weigh before liftoff?
 
 
 

                b.  When her space vehicle is 6400 km above the earth's surface, she will weight 1/4 of what she weighed on Earth.  What does she weight at this point in space?
 
 

            c.  What is the acceleration on her mass at this point in space?