velocity * time\ndisplacement/ magnitude\nspeed is a vector\ntrue\nfalse\nvelocity is a vector\ntrue\nfalse

Brief Explanations:

1. Recall the formula for displacement: Displacement = velocity * time.
2. Speed is a scalar quantity as it only has magnitude. It is the rate of change of distance.
3. Velocity is a vector quantity as it has both magnitude and direction. It is the rate of change of displacement.

Answer:

1. The formula for displacement is velocity * time.
2. Speed is a vector - False.
3. Velocity is a vector - True.