Author Question: A projectile is launched from ground level at 15 above the horizontal and lands downrange. What ... (Read 222 times)

HCHenry · **on:** Jul 29, 2018

A projectile is launched from ground level at 15 above the horizontal and lands downrange. What other projection angle for the same speed would produce the same down-range distance?

A) 30
B) 45
C) 50
D) 75
E) 90

Question 2

A bullet fired horizontally over level ground hits the ground in 0.5 second. If it had been fired with twice the speed it would have hit the ground in

A) less than 0.5 s.
B) 0.5 s.
C) more than 0.5 s.