Which of the following is not a vector quantity?Group of answer choicesPowerGravitational accelerationImpulseVelocity

The quantity that is not a vector is Power.

Here's why:

1. Power: Power is a scalar quantity. It is the rate at which work is done or energy is transferred, it does not have a direction.

2. Gravitational acceleration: This is a vector quantity. It has both magnitude (the rate of increase of velocity, typically measured in meters per second squared) and direction (towards the center of the earth).

3. Impulse: Impulse is also a vector quantity. It is the integral of a force, F, over the time interval, t, and has both magnitude and direction.

4. Velocity: Velocity is a vector quantity. It is defined as the rate of change of displacement and it has a direction (the direction of displacement).