In the Absence of Air Resistance, a Projectile Launched at the Same

Multiple Choice

In the absence of air resistance, a projectile launched at the same speed at any angle will attain the greatest range when projected at

A) 30°.
B) 45°.
C) 60°.
D) 90°.
In the case of throwing a heavy spear, not at the same speed but with the same force, the greatest range is attained more likely when thrown at
E) 30°
F) 45°
G) 60°
H) 90°