b2Vec2 force = b2Vec2(0.0,15.0);

     ballBody->SetLinearVelocity(force);

float angleRadians = atan2(touchBegin.x - touchEnd.x, touchBegin.y - touchEnd.y);
    float angleDegrees = CC_RADIANS_TO_DEGREES(angleRadians);
    cocosAngle1 = -1 * angleDegrees;