Speed unlike accerlation or velocity does not specify _______
a direction or displacement.
Speed, unlike acceleration or velocity, does not specify direction.
the options are mass
distance
time
Direction
The correct answer is direction. Speed is a scalar quantity that only indicates the magnitude or size of the velocity, but it does not tell us the direction in which an object is moving.
Speed unlike acceleration or velocity does not specify direction.
To understand this, let's break down the concepts:
1. Speed: Speed is a scalar quantity that represents the rate at which an object moves. It only indicates how fast an object is traveling, regardless of the direction. For example, if a car is moving at a speed of 60 miles per hour, it means the car is covering 60 miles of distance in one hour.
2. Velocity: Velocity is a vector quantity that describes the rate of change of displacement of an object. Velocity includes both the speed of an object and the direction in which it is moving. For example, if a car is traveling with a velocity of 60 miles per hour north, it means the car is moving at a speed of 60 mph in the north direction.
3. Acceleration: Acceleration is the rate at which an object changes its velocity. It is also a vector quantity as it includes both the magnitude (change in speed) and direction of the velocity change. Acceleration can be positive (speeding up) or negative (slowing down). For example, if a car goes from 0 to 60 miles per hour in 5 seconds, it is experiencing positive acceleration.
Considering the definitions above, speed does not include any information about the direction of motion. It solely focuses on the magnitude of the motion, disregarding whether the object is moving forwards, backwards, upwards, or downwards.