# Projectile Problem: Find y, vy0, vy Impact, & Velocity Mag/Dir

In summary, the conversation discussed launching a projectile with an initial velocity of 2.8 m/s at an angle of 30 degrees. After 0.4 seconds, the projectile hit a target at a horizontal distance of 0.4m. The y-coordinate of the target was found to be 0.399. The initial velocity was calculated using the equation vy^2+2ay(y-y0). The y-component of the projectile's velocity just before impact and its magnitude and direction were not discussed in the conversation.

you launch a projectile with an initial velocity of at an angle of 30 degrees and it hits a target .4 secpmds after it is launched at a horizontal distance of .4m
a. what is the y coordinate of the target
b. what was its intial velocity
c.what is the y- components of it s velocity just before it impacts the target
d. and what is its velocity magnitude and direction just before it impacts the target.

what i did:
1. drew graph
2. vy^2+2ay(y-y0) to find initial velocity
vy0= 2.8 m/s
3. find time
with vy=vy0+at
0-2.8/-9.8=.285 seconds
4. y coordinate:
y=voy+1/2at^2

I suggest parking this one until we've dealt with the other similar problem you just posted. Then you can use this one to see if you've learned how to do them.

## What is a projectile problem?

A projectile problem involves finding the position, velocity, and acceleration of an object that is launched into the air and follows a curved path due to the force of gravity.

## What is y in a projectile problem?

In a projectile problem, y represents the vertical displacement or height of the object at a given time.

## How do you find vy0 in a projectile problem?

vy0, or the initial vertical velocity, can be found by using the equation vy0 = v0sinθ, where v0 is the initial velocity of the object and θ is the launch angle.

## What is vy Impact in a projectile problem?

vy Impact, or the vertical velocity at impact, is the final vertical velocity of the object when it reaches the ground or a target. It can be calculated using the equation vy Impact = vy0 + gt, where g is the acceleration due to gravity and t is the time of flight.

## How do you find the magnitude and direction of velocity in a projectile problem?

The magnitude and direction of velocity can be found using the equation v = √(vx^2 + vy^2) and θ = tan^-1(vy/vx), where vx and vy are the horizontal and vertical components of velocity, respectively.