The diagram shows a ball of 0.4 kg mass being released from a height of 5 m above the ground. A is the initial position of the ball. B is the position of the ball at the moment before it hits the ground. 1)what is the gravitational potential energy of the ball at position A?
[gravitational field strength, g = 10 N m s-2]

2)the ball achieves a maximum speed of 10 m s-1 at position B. what is the kinetic energy of the ball at position B?

3)compare the amount of energy obtained in question 1&2. give an explanation for the result.

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

d is the correct answer

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.

attach the statements so i can answer : )