Question

A race car completes the final lap of a race on a 2-kilometer circular track. At the start of the lap, it crosses the line at 60 meters/second. It completes the lap 28.57 seconds later, crossing the line at 85 meters/second. Calculate the displacement and average acceleration of the car along the track over the course of the final lap.
A. Displacement is 0 meters, and acceleration is 0.88 meters/second2.
B. Displacement is 2,000 meters, and acceleration is 1.14 meters/second2.
C. Displacement is 0 meters, and acceleration is 70.0 meters/second2.
D. Displacement is 2,000 meters, and acceleration is 80.0 meters/second2.
E. Displacement is 0 meters, and acceleration is 0.70 meters/second2.

Answer 1

Answer:

E. Displacement is 0 meters, and acceleration is 0.70 meters/second2.

Answer 2

Displacement is 0 meters, and acceleration is 0.70 meters/second2.

hope this helped you