Admin Table of Contents
- 1 What are the two-dimensional motions?
- 2 Why is horizontal and vertical motion independent?
- 3 What is the projectile path called?
- 4 What is independent motion?
- 5 What is direction motion?
- 6 What is the independence of horizontal and vertical motion?
- 7 Is it possible to resolve two-dimensional motion into perpendicular components?
- 8 Why do we use vector notation for two dimensional motion?
What are the two-dimensional motions?
Two-dimensional (2D) motion means motion that takes place in two different directions (or coordinates) at the same time. The simplest motion would be an object moving linearly in one dimension. An example of linear movement would be a car moving along a straight road or a ball thrown straight up from the ground.
Why is horizontal and vertical motion independent?
Projectiles travel with a parabolic trajectory due to the influence of gravity, There are no horizontal forces acting upon projectiles and thus no horizontal acceleration, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a projectile is independent of its vertical motion.
What are the different kinds of direction of motion?
In this section, you are going to look at another type of motion, constant velocity….Constant Velocity.
| Positive Velocity or Displacement | Negative Velocity or Displacement |
|---|---|
| Right Up Forward North East Away from the observer | Left Down Backward South West Toward the observer |
What is the projectile path called?
trajectory
The object is called a projectile, and its path is called its trajectory.
What is independent motion?
Independence of Motion. The horizontal and vertical components of two-dimensional motion are independent of each other. Any motion in the horizontal direction does not affect motion in the vertical direction, and vice versa.
What type of motion is the horizontal motion of a projectile?
Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity….Projectile Motion Notes.
| Time | Horizontal Velocity | Vertical Velocity |
|---|---|---|
| 7 s | 73.1 m/s, right | 49.0 m/s, down |
What is direction motion?
The direction of motion is the direction the velocity vector points in. To take your example of a projectile fired straight up, because only it’s height, z, is changing the velocity vector will look like: →v=(0,0,dzdt)
What is the independence of horizontal and vertical motion?
Independence of Motion The horizontal and vertical components of two-dimensional motion are independent of each other. Any motion in the horizontal direction does not affect motion in the vertical direction, and vice versa. This is true in a simple scenario like that of walking in one direction first, followed by another.
How are the horizontal and vertical components of two-dimensional motion related?
The horizontal and vertical components of two-dimensional motion are independent of each other. Any motion in the horizontal direction does not affect motion in the vertical direction, and vice versa. This is true in a simple scenario like that of walking in one direction first, followed by another.
Is it possible to resolve two-dimensional motion into perpendicular components?
Resolving two-dimensional motion into perpendicular components is possible because the components are independent. We shall see how to resolve vectors in the next couple of lessons. We will find such techniques to be useful in many areas of physics.
Why do we use vector notation for two dimensional motion?
This means that we can treat motion in two dimensions as two times one-dimensional motion: a motion along x and a separate motion along y. This highlights the usefulness of the vector notation for allowing us to use one vector equation ( →v = d dtΔ→r) to represent two equations (one for x and one for y ).