1. A car rounds a 1.20 km radius circular track at 89 km/h

Find the magnitude of the car's average acceleration after it has completed one-fourth of the circle.

Express your answer to two significant figures and include the appropriate units.

2. You walk 1260 m east and then 860 m south in a total time of 25 min .

A. Compute your displacement.

Enter the east and south components of the displacement separated by a comma.

B. Compute your average velocity in m/s.
Enter the east and south components of the velocity separated by a comma.

3. A circular racetrack with 250 m radius lies in the x-y plane and is centered at the origin. A car rounds the track counterclockwise starting at the point (250 m , 0).

A. Find the total distance traveled after one-quarter lap.
Express your answer with the appropriate units.

B. Find the total displacement after one-quarter lap.

Enter the x and y components of the displacement separated by a comma.

C. Find the total distance traveled after one-half lap.

Express your answer with the appropriate units.

D. Find the total displacement after one-half lap.

Enter the x and y components of the displacement separated by a comma.

E. Find the total distance traveled after one complete lap.

Express your answer with the appropriate units.

F. Find the total displacement after one complete lap.

Enter the x and y components of the displacement separated by a comma.