Correct answer only ! car a travels from new york to miami at 25 m/s. car b travels from new york to chicago, also at 25 m/s. car a and car b have speeds and velocities. a) equal, equal b) equal, different c) different, equal d) different, different

Speed is a scalar quantity.  A scalar quantity does not have a direction.

Velocity is a VECTOR quantity.  A vector quantity does have a direction.

So, since the numerical value is the same, speed is the same (equal).  But, since the direction is different, the velocity is different.

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.