Projectile Motion & Vectors: Acceleration and Axis Conventions Explained

In summary, projectile motion is the curved motion of an object through the air influenced by gravity. The two main factors that affect it are initial velocity and gravity, with other factors including air resistance and object shape. To calculate the trajectory, vector quantities like velocity and acceleration are used. Projectile motion is used in sports, engineering, and other real-life applications.
  • #1
Sarah00
64
1

Homework Statement


screenshot_8.png


Homework Equations


-

The Attempt at a Solution


I know that the acceleration is downward always with value of 10m/s2
The answer is D? because j denote vertical axis and negative sign means downward?
[/B]
 
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  • #2
It wouldn't hurt to write down the kinematic equations for the projectile motion in step 2.
 
  • #3
Sarah00 said:

Homework Statement


screenshot_8.png


Homework Equations


-

The Attempt at a Solution


I know that the acceleration is downward always with value of 10m/s2
The answer is D? because j denote vertical axis and negative sign means downward?[/B]
Yes.
 

1. What is projectile motion?

Projectile motion is the motion of an object through the air, typically following a curved path due to the influence of gravity. This type of motion is commonly seen in objects such as baseballs, projectiles, and even planets in orbit.

2. What factors affect projectile motion?

The two main factors that affect projectile motion are the initial velocity of the object and the force of gravity. Other factors that can play a role include air resistance, wind, and the shape and size of the object.

3. How do you calculate the trajectory of a projectile?

To calculate the trajectory of a projectile, you need to use vector quantities such as velocity, acceleration, and displacement. By breaking down the motion into x and y components, you can use equations of motion and vector addition to determine the path of the projectile.

4. What is the difference between scalar and vector quantities?

Scalar quantities are those that have only magnitude, such as speed or temperature. Vector quantities have both magnitude and direction, such as velocity or force. In projectile motion, quantities such as displacement and acceleration are considered vectors.

5. How is projectile motion used in real life?

Projectile motion is used in many real-life applications, including sports such as baseball and basketball, where players must calculate the trajectory of their throws. It is also used in engineering, such as in ballistics and in designing roller coasters.

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