A873-kg (1930-lb) dragster, starting from rest completes a 401.4-m (0.2509-mile) run in 4.945 s. if the car had a constant acceleration, what would be its acceleration and final velocity

To solve this problem it is necessary to apply the kinematic equations of motion.

By definition we know that the position of a body is given by

Where

Initial position

Initial velocity

a = Acceleration

t= time

And the velocity can be expressed as,

Where,

For our case we have that there is neither initial position nor initial velocity, then

With our values we have , rearranging to find a,

Therefore the final velocity would be

Therefore the final velocity is 81.14m/s

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.

in physics zero. in muscle fatigue could be high