Question

Which does not represent a change in velocity?

Group of answer choices

A person is riding a bicycle at 4 m/s west and decreases her speed to 3 m/s.

A plane is flying south at 600 km/h and then flies directly upwards before returning to the airport.

A balloon is floating up into the air at 1 m/s.

A bus is traveling west at 2 m/s and then turns a corner.

Answer 1

A balloon is floating up into the air at 1 m/s.

Step-by-step explanation:

Velocity is the displacement divided by the time;

Velocity =
`(displacement)/(time)`

It is a vector quantity that has magnitude and direction.

The choice that shows a change in direction is a correct specification of velocity.

A balloon floating up into the air at 1m/s shows no directional change.