`v_1 = sqrt(2*( p_2 + rho * 9.80665 * y_2 +1/2* rho * v_2 ^2- rho * 9.80665 * y_1 - p_1 )/ rho )`

Enter a value for all fields

Bernoulli's Equation solved for initial velocity with any gravity calculates the initial velocity of a given fluid with any gravitational acceleration

Reference

Young, Hugh and Freeman, Roger.  University Physics With Modern Physics.  Addison-Wesley, 2008. 12th Edition, (ISBN-13: 978-0321500625 ISBN-10: 0321500628 ) Pg 468, eq 14.17