After Instantiating a gameobject it does ot go in the desired direction and flys up

Questions & Answers
1

I have been working on a trying to implement a simple shooting system but I have no idea how the bullet prefab on instantiating changes its rotation and moves in a different direction as it should.
I also tried to manually change the transform and rotation of the instantiated projectile but even that did not work .
Here is the shoot class that instantiates projectiles from the weapon

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Shoot : MonoBehaviour {
public float Offset=-90;
public GameObject projectile;
public Transform ShotPos;
public float timeBtwShots;
public float startTimeBtwShots;
	// Use this for initialization
	void Start () {
		
		
	}
	
	// Update is called once per frame
	void Update () {
		
		         Vector3 mousePos = Input.mousePosition;
         mousePos.z = 5.23f;
 
         Vector3 objectPos = Camera.main.WorldToScreenPoint (transform.position);
         mousePos.x = mousePos.x - objectPos.x;
         mousePos.y = mousePos.y - objectPos.y;
 
         float angle = Mathf.Atan2(mousePos.y, mousePos.x) * Mathf.Rad2Deg;
         transform.rotation = Quaternion.Euler(new Vector3(0, 0, angle));
		 if(timeBtwShots<=0)
		 {
		 if(Input.GetMouseButtonDown(0))
		 {
			 Instantiate(projectile,ShotPos.position,transform.rotation);
			projectile.transform.position=ShotPos.position;
			projectile.transform.rotation=transform.rotation;

			
			
			 timeBtwShots=startTimeBtwShots;
		 }
		 }
		 else{
			 timeBtwShots-=Time.deltaTime;

		 }
	}
}

And this is the projectile class that destroys projectiles and translates its position

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Projectile : MonoBehaviour {
public float bulletSpeed=7;
public float lifeTime=1f;
private Vector3 Target;

	// Use this for initialization
	void Start () {

		Invoke("DestroyProjectile",lifeTime);
		//Target=Camera.main.ScreenToWorldPoint(Input.mousePosition)+Camera.main.ScreenToWorldPoint(Input.mousePosition);
		

		
		
	}
	
	// Update is called once per frame
	void Update () {
	transform.Translate(Vector2.up*bulletSpeed*Time.deltaTime);
		

		
	}
	void DestroyProjectile()
	{
		Destroy(gameObject);
	}
}
2

you are using the vector3 up so move the object so thats why it goes up

 transform.Translate(Vector2.forward*bulletSpeed*Time.deltaTime);