Need Help fixing my code:

here is my code

import java.util.Scanner;

public class One

{

public static void main(String[] args)

{

Scanner input = new Scanner(System.in);

System.out.print("Enter the initial velocity of ball : ");

double vel = input.nextDouble();

int time = 0;

double height = 0;

int bounce = 0;

while(bounce < 5)

{

System.out.println("Time: " + time + "Height: " + height);

time++;

height = height +vel;

vel = vel - 32;;

if(height < 0);

{

height *= -0.5;

vel *= -0.5;

System.out.println("Bounce");

bounce++;

}

}

System.out.println("Stop");

}

}

Here is the problem

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Question: Write a program that simulates a bouncing ball by computing its height in feet at each second as ...

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Write a program that simulates a bouncing ball by computing its height in feet at each second as time passes on a simulated clock. At time zero, the ball begins at height zero and has an initial velocity supplied by the user. (An initial velocity of at least 100 feet per second is a good choice.) After each second, change the height by adding the current velocity; then then subtract 32 from the velocity. If the new height is less than zero, multiple both the height and the velocity by -.5 to stimulate the bounce. Stop at the fifth bounce. The output should be the following form

Enter the initial velocity of the ball: 100

Time: 0 Height: 0.0

Time: 1 Height: 100.0

Time: 2 Height: 168.0

Time: 3 Height: 204.0

Time: 4 Height: 208.0

Time: 5 Height: 180.0

Time: 6 Height: 120.0

Time: 7 Height: 28.0

Bounce!

Time: 8 Height: 48.0