Arace car rounds a curve at 59 m/s. the radius of the curve is 440 m, and the car's mass is 615 kg. (assume the car's speed remains constant. take the radially inward direction to be positive. indicate the direction with the sign of your answer.) (a) what is the car's (centripetal) acceleration? m/s2 what is it in g's? g (b) what is the centripetal force acting on the car? n

Part a)

Part b)

Explanation:

Part a)

As we know that centripetal acceleration is given as

here we know that

now we will have

Part b)

Centripetal force is given as

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.