cannonball is launched with a velocity vo at an angle of 60° with the horizontal.  (Neglect air resistance) (a)  If the angle is increased, what happens to the amount of time the cannonball spends in the air.   ____ increases   _____decreases   _____stays the same Justify your answer.   (b) The cannonball is replaced with a cannonball of twice the mass and launched with a velocity vo and the same angle 60°.   Does the range change?   ____ increases  ____decreases ____ stays the sa

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!