An object’s velocity includes information about the __of motion, but speed does not. The object’s __ ,is 2 m/s north. When you calculate ,you use distance and time. The units for are meters per second or meters per second squared (m/s2). Word bank: speed rate direction acceleration distance velocity
The Correct Answer and Explanation is:
The correct answers are:
- velocity for the first blank
- velocity for the second blank
- acceleration for the third blank
- distance for the fourth blank
- acceleration for the last blank
Now, let me explain in detail:
Velocity vs. Speed
The key distinction between velocity and speed lies in the inclusion of direction in the measurement of motion. Speed is a scalar quantity, meaning it only measures how fast an object is moving without considering its direction. For example, an object moving at 2 meters per second (m/s) is traveling at a certain speed, but it doesn’t specify in which direction.
On the other hand, velocity is a vector quantity, which means it not only measures the rate of motion (how fast an object is moving) but also includes the direction of motion. So, when we say the object’s velocity is 2 m/s north, we are providing both the speed (2 m/s) and the direction (north), which gives a complete picture of the object’s movement.
Acceleration
Acceleration is defined as the rate of change of velocity over time. It can be calculated by using the formula:
[
\text{Acceleration} = \frac{\text{Change in velocity}}{\text{Time}}
]
Acceleration can involve a change in either the speed or the direction of motion, or both. If an object is speeding up, slowing down, or changing direction, it is said to be experiencing acceleration. The units of acceleration are meters per second squared (m/s²), which tells us how much the velocity changes each second.
Distance
Distance refers to the total length of the path traveled by an object, and it is a scalar quantity (no direction). When calculating velocity or acceleration, we use distance (the total path length) and time. Distance is typically measured in meters (m).
Summary:
- Velocity includes both speed and direction, unlike speed, which only measures how fast the object moves.
- Acceleration is the change in velocity over time and is measured in m/s².
- Distance is the total path length traveled, used in calculations involving speed and velocity.
So, the final answers are velocity (for direction), velocity (for the second part), acceleration (for rate of change), and distance (used for calculations).