A Large Cannon Is Fired from Ground Level Over Level

question 23

Multiple Choice

A large cannon is fired from ground level over level ground at an angle of 30° above the horizontal.The muzzle speed is 980 m/s.Neglecting air resistance, the projectile will travel what horizontal distance before striking the ground?

• A)4.3 km
• B)8.5 km
• C)43 km
• D)85 km
• E)170 km

---

Definitions:

Syndiotactic Polystyrene

A type of polystyrene where the phenyl groups are positioned at alternating sides of the polymer chain, providing unique properties like higher crystallinity.

Polymer Backbone

The continuous chain of carbon atoms in a polymer, to which other atoms or chains are attached.

Isotactic

pertaining to polymers where all substituent groups are oriented on the same side of the polymer chain, giving specific physical properties.

Isotactic Polypropylene

A type of polypropylene where all the methyl groups are aligned on the same side of the polymer chain, leading to a high degree of crystallinity.