A small pumpkin is launched from a very versatile catapult at a variety of speeds and angles. The angles are measured relative to the horizontal. Rank each of the following trials by the maximum height reached by the pumpkin. (1=highest) Consider air resistance to be negligible.

Speed: 27.9m/s, Angle: 33.8∘,
Speed: 7.8m/s, Angle: 65.6∘,
Speed: 38.1m/s, Angle: 42.1∘,and
Speed: 24.3m/s, Angle: 69.5∘

Explanation:

Maximum height reached

H = u²sin²θ / 2g

For speed=27.9m/s, Angle= 33.8∘,

H=  (27.9 sin33.8)² / 2g

= 12.29 m

For speed = 7.8m/s, Angle=65.6∘

H=  (7.8 sin65.6 )² / 2g

= 2.57 m

For speed=38.1m/s, Angle=42.1∘,

H = (38.1 sin42.1 )² / 2g

= 33.28 m

For speed=24.3m/s, Angle=69.5∘,

H = (24.3sin69.5)² / 2g

= 26.43 m  

Rank 1  --     Speed: 38.1m/s, Angle: 42.1∘,

Rank 2  Speed: 24.3m/s, Angle: 69.5∘

Rank 3 Speed: 27.9m/s, Angle: 33.8∘,

Rank 4 Speed: 7.8m/s, Angle: 65.6∘,

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it