An eagle is flying horizontally at a speed of 3.1 m/s when the fish in her talons wiggles loose and falls into the lake 5.8 m below. a. calculate the magnitude of the velocity of the fish relative to the water when it hits the water in m/s.
b. calculate the angle, in degrees, by which the fish's velocity is directed below the horizontal when the fish hits the water.

11.101 m/s

Explanation:

Given

Velocity of eagle=3.1 m/s

Eagle is at height of 5.8 m

Fish is dropped with a horizontal velocity of 3.1 m/s

time taken by fish to reach lake is

here u=0 (vertical velocity)

t=1.087 s

Vertical velocity acquired by fish is v=u+at

Horizontal velocity=3.1 m/s

Therefore net velocity

below horizontal

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

the answer is a)

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