Ineed is urgent ! which of the following statements applies to the motion of a ball rising and then falling in free fall? i. the ball has constant acceleration as it moves upward. ii. the ball has constant acceleration at the top of its path. iii. the ball has constant acceleration as it moves downward. a.i onlyb. iii onlyc. i and iiid. i, ii, and iii 

D.  For any projectile motion, there is a constant downwards acceleration due to gravity at all instances.  This not to be confused with velocity, which changes due to gravity at every moment along the object's path.

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.