Question

John is traveling north at 20 meters/second and his friend Betty is traveling south at 20 meters/second. If north is the positive direction, what are John and Betty's speeds?

Answer 1

Both of their speeds are 20 m/s.
Direction is not involved in describing speed.

Answer 2

The John 's speed is 20 m/s.

The Betty's speed is 20 m/s

Step-by-step explanation:

Given that,

John is traveling north at 20 meters/second and his friend Betty is traveling south at 20 meters/second.

We need to calculate the John and Betty's speeds

We know that,

The speed is a scalar quantity. its has only magnitude.

Hence, The John 's speed is 20 m/s.

The Betty's speed is 20 m/s