Speed, unlike acceleration or velocity, does NOT specify _______.(1 point) Responses Mass Mass Distance Distance Time Time Direction
Direction
Speed, unlike acceleration or velocity, does NOT specify direction.
Speed, unlike acceleration or velocity, does NOT specify direction.
To determine this answer, we can first understand the different concepts involved.
Speed is a scalar quantity that refers to how fast an object is moving, without considering the direction of its motion. It is calculated by dividing the distance traveled by the time it takes to cover that distance. The unit of speed is expressed in distance units per time unit (e.g., kilometers per hour or meters per second).
Acceleration, on the other hand, is a vector quantity that measures the rate at which an object's velocity is changing. It specifies both the magnitude (how much the velocity is changing) and the direction of the change. Acceleration can be positive (speeding up) or negative (slowing down), depending on whether the velocity is increasing or decreasing.
Velocity, similar to acceleration, is also a vector quantity that includes both magnitude and direction. It describes the rate of change of displacement of an object over time. It is calculated by dividing the change in position (displacement) by the time taken. Velocity could be constant (constant speed in a straight line) or changing (accelerating or decelerating).
Considering these definitions, we can determine that speed is the only concept that does not specify direction. Mass, distance, and time are all scalar quantities that do not involve direction, but speed is specifically related to the rate of an object's motion without indicating which direction it is moving in.