i want jump the player sprite on touch it .when i tap the sprite it jump one time then 3 time with diffrent level of height  and after some time its gone out of screen.

i want to jump it some exact leval of height .hoe can i do this.

I apply the physics on sprite that is

on init() method

  sprite3 = Sprite::create("kartoon.png");
    sprite3->setPosition(Point(40,40));
    sprite3->setAnchorPoint(Vec2(0,0));
   

    spritibody=PhysicsBody::createBox(sprite3->getContentSize(),PhysicsMaterial(0,1,0));
    sprite3->setPhysicsBody( spritibody );
    
    spritibody->setDynamic(true);
   this->addChild(sprite3,4);

onTouch the

 if(sprite3->boundingBox().containsPoint(locationInNode))
    {
        spritibody->setGravityEnable(true);
        spritibody->setDynamic(true);
        spritibody->applyImpulse(Vec2(0,20));
        sprite3->setPhysicsBody(spritibody);
        sprite3->setRotation(1);
        spritibody->setVelocity(Vec2(0, 0));
    
      }