1.	Do the flight time and range of a projectile depend on its mass? Why or why not?	Write out your answer in a clear and well supported paragraph.
a.	The definition of a projectile is an object that is only being acted upon by gravity, and since gravity affects all objects proportionately based on its mass. The force of gravity or weight adjusts so that the affect on the object is the same.
So any object fired with say an initial velocity of 9.81 m/s will hit the ground at the same time any other object fired at the same rate regardless of mass.

2.	How do the ball's time-of-flight measurements for the short, middle, and long range distances compare between horizontal and non-horizontal launches? Explain the differences.	Write out your answer in a clear and well supported paragraph.
a.	The ball landed farely close to the predicted spot. You can predict time of flight based on initial vertical velocity, acceleration due to gravity and launch angle. Change in angle change in the vertical component of velocity, so change in angle does change the time of flight.
3.	From your results, do you think the launch speed changes significantly as the launcher angle is varied? Is this true for all three range settings? If so, why? Write out your answer in a clear and well supported paragraph.
a.	Launch speed does not change by changing the angle. If the angel is changed the height and the distance can be changed higher angel means further arch and further distance. If the angle is small it will not increase or decrease the speed.