Aball is tossed from an upper-story window of a building. the ball is given an initial velocity of 7.90 m/s at an angle of 23.0° below the horizontal. it strikes the ground 5.00 s later.(a) how far horizontally from the base of the building does the ball strike the ground? 1 m(b) find the height from which the ball was thrown.2your response differs from the correct answer by more than 10%. double check your calculations. m(c) how long does it take the ball to reach a point 10.0 m below the level of launching? 3 s

Part a)

Part b)

height will be 107.2 m

Part c)

Explanation:

Initial velocity of the ball is given as

v = 7.90 m/s

angle of projection of the ball

now the two components of velocity of ball is given as

Part a)

Since ball strike the ground after t = 5 s

so the distance moved by the ball in horizontal direction is given as

Part b)

Now in order to find the height of the ball we can find the vertical displacement of the ball

So height will be 107.2 m

Part c)

when ball reaches a point 10 m below the level of launching then the displacement of the ball is given as

so we will have

so we will have

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 correct choice is a .

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