Question

multiple choice question
which describes the speed of an object and not the velocity of an object?
o 800 km/h west
o 400 km/h west
o 800 km/h
o 800 km west

Explanation:

Speed is a scalar quantity with only magnitude. Velocity is a vector quantity with both magnitude and direction. Options with direction (west) are velocities. 800 km/h has only magnitude, so it's speed. 800 km west is a displacement, not speed or velocity.

Answer:

C. 800 km/h