A light ping-pong ball and a heavy rubber ball of exactly the same size are each launched at the same angle and initial velocity, but the rubber ball goes much farther than the ping-pong ball. Draw a Free Body diagram for each object and use the concept of Drag Force and Terminal Velocity to prove that the problem statement is correct.

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6

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.

heat the gas and measure the pressure

the total distance traveled by the car is

30km + 49km = 79 km .