How Is Acceleration Calculated When a Car Changes Direction But Not Speed?

[possum30540]

Homework Statement

A car traveling at a constant speed of 20 m/s that is initially traveling due northwest rounds a corner so that after 10 s, the car is traveling due northeast. What are the magnitude and direction of the car's average acceleration during this interval of time? Be sure to sketch a motion diagram for process as well.

Homework Equations

acceleration = change in velocity / change in time

The Attempt at a Solution

Since the car is traveling at a constant speed, I would assume that the acceleration is zero. However, this does not seem right by the content of the question. Could someone please help me get started?

 

[LowlyPion]

Homework Statement

A car traveling at a constant speed of 20 m/s that is initially traveling due northwest rounds a corner so that after 10 s, the car is traveling due northeast. What are the magnitude and direction of the car's average acceleration during this interval of time? Be sure to sketch a motion diagram for process as well.

Homework Equations

acceleration = change in velocity / change in time

The Attempt at a Solution

Since the car is traveling at a constant speed, I would assume that the acceleration is zero. However, this does not seem right by the content of the question. Could someone please help me get started?

Velocity and acceleration are Vectors.

So ... Change in Velocity / change in time =