what is motion?
In physics, motion is a change in position of an object with respect to time. Change in action is the result of an unbalanced force. Motion is typically described in terms of velocity, acceleration, displacement and time .[1] An object's velocity cannot change unless it is acted upon by a force, as described by Newton's first law. An object's momentum is directly related to the object's mass and velocity, and the total momentum of all objects in a closed system (one not affected by external forces) does not change with time, as described by the law of conservation of momentum.
A body which does not move is said to be at rest, motionless, immobile, stationary, or to have constant (time-invariant) position.
http://en.wikipedia.org/wiki/Motion_%28physics%29
Paul needs to learn to put quoted passages in quotation marks AND to tell where the information came from.
If he doesn't do these things, he's plagiarizing. =(
Ok, thanks
You're welcome. We aim to help keep our students out of trouble, too!! =)
There's nothing wrong with giving this kind of information, but just be sure to tell where you got it. And since students can't post links, all you have to include is something like this:
from Wikipedia: Motion physics
Motion refers to the act or process of changing position or location over time. It is the movement of an object or organism from one place to another. Motion can be described in terms of its speed, direction, and acceleration.
To understand what motion is, let's explore how you can observe and measure motion:
1. Observation: To identify motion, observe if an object or organism changes its position relative to a reference point. A reference point can be any fixed object or point that serves as a marker for comparison.
2. Measurement: Motion can be quantified using various measurements, such as distance, speed, velocity, and acceleration.
- Distance: Measure the total path covered by the object or organism, usually using units such as meters or kilometers.
- Speed: Calculate how fast an object moves, which is the distance traveled divided by the time taken. Speed is typically measured in units like meters per second (m/s) or miles per hour (mph).
- Velocity: Velocity is similar to speed but includes the direction of motion. It is also defined as the change in position per unit time, including both the magnitude (speed) and direction.
- Acceleration: If an object's speed or direction changes over time, it is experiencing acceleration. Acceleration is the rate of change of velocity, commonly measured in meters per second squared (m/s²) or kilometers per hour squared (km/h²).
By observing, measuring, and analyzing these aspects, we can better understand and describe motion.