Question

How do you solve free fall problems solving kinematic equations?

Answer 1

To solve free fall problems using kinematic equations, define the positive and negative directions, draw a sketch of the problem, record the knowns and unknowns, use the appropriate kinematic equations, and check the solution for reasonableness.

Step-by-step explanation:

To solve free fall problems using kinematic equations, follow these steps:

1. Define the positive and negative directions. In most cases, the positive direction is upward, so acceleration (g) is negative.
2. Draw a sketch of the problem to visualize the physics involved.
3. Record the knowns and unknowns from the problem description.
4. Use the appropriate kinematic equations to solve for the unknowns. The kinematic equation for objects in free fall is V = Vo - gt.
5. Check your solution to ensure it is reasonable.

For example, if a ball is dropped from a height of 10 meters, you can use the equation V = Vo - gt to find the velocity of the ball after a given time.

Answer 2

Like any moving object, the motion of an object in free fall can be described by four kinematic equations. The kinematic equations that describe any object's motion are:

D = vit + 1/2 at2

(vi +vf)/2 = D/t

a = (vf - vi)/t

vf2 = vi2 + 2aD

D = displacement

a = acceleration

t = time

vf = final velocity

vi = initial velocity

Step-by-step explanation:

Free fall means that an object is falling freely with no forces acting upon it except gravity, a defined constant, g = -9.8 m/s2. The distance the object falls, or height, h, is 1/2 gravity x the square of the time falling. Velocity is defined as gravity x time.

The kinetic equation is the evolution equation of the distribution function. It is to the distribution function what Newton's second law is to an individual particle. It is deduced from this fundamental law. It has the following general form: ∂ t f + v .