Question

the direction and speed of an object is described by its ________. displacement average speed average displacement velocity

Explanation:

• Displacement is the change in position of an object. It has magnitude and direction but does not describe speed.
• Average speed is the total distance traveled divided by the total time taken. It is a scalar quantity (has magnitude only, no direction).
• Average displacement is not a standard physical quantity in the context of describing motion in the way the question asks.
• Velocity is a vector quantity. A vector has both magnitude (which can be related to speed in the case of velocity) and direction. So, velocity describes both the speed (magnitude part of velocity) and direction of an object's motion.

Answer:

velocity