Don't get this 2d motion problem?

In summary, the problem involves a player kicking a football at an angle of 40.0 degrees above the horizontal with an initial speed of 14.0 m/s. A second player is standing at a distance of 26.0m and starts running to catch the ball before it hits the ground. The question asks for the speed at which the second player must run to catch the ball just before it hits the ground.
  • #1
elpermic
29
0
don't get this 2d motion problem??

Homework Statement


a player kicks a football at an angle of 40.0 degrees above the horizontal with an initial speed of 14.0 m/s. Air resistance may be ignored. A second player standing at a distance of 26.0m from the first(in the direction of the kick) starts running to meet the ball at the instant it is kicked. How fast must he run in order to catch the ball just before it hits the ground?


Homework Equations





The Attempt at a Solution

 
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  • #2


i don't get the concept at how to do this when the question asks me "to catch the object before it hits the ground"
 
  • #3


Just assume the player catches the ball a tiny tiny amount (effectively 0 meters) above the ground.
 

Related to Don't get this 2d motion problem?

1. What is 2D motion and why is it important in science?

2D motion refers to the movement of an object in two dimensions, typically represented as a horizontal and vertical axis. This type of motion is important in science because it allows us to analyze and understand the movement of objects in real-world scenarios, such as projectiles or objects in free fall.

2. How do you calculate the velocity and acceleration of an object in 2D motion?

To calculate the velocity of an object in 2D motion, you must use vector addition to combine the horizontal and vertical components of the object's velocity. To calculate the acceleration, you can use the formula a = Δv/Δt, where Δv is the change in velocity and Δt is the change in time.

3. What are some common examples of 2D motion problems?

Some common examples of 2D motion problems include calculating the trajectory of a projectile, analyzing the motion of objects in circular or elliptical orbits, and determining the displacement and velocity of an object thrown at an angle.

4. How do you account for air resistance in 2D motion problems?

In 2D motion problems, air resistance can be accounted for by adding an additional force vector in the opposite direction of motion. This force is typically proportional to the square of the object's velocity and can significantly affect the object's trajectory and speed.

5. What are some tips for solving 2D motion problems?

Some tips for solving 2D motion problems include breaking down the motion into its horizontal and vertical components, using vector addition to find the total velocity and acceleration, and carefully considering any external forces that may affect the motion, such as air resistance or gravity.

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