Paper, 'An account of some experiments made to prove that the force of moving bodies is proportionable to their velocities (or rather that the momentum of moving bodies is to be found by multiplying the masses into the velocities) in answer to such who have sometime ago affirm'd, that that force is proportionable to the square of the velocity, and to those who still defend the same opinion' by J T [John Theophilus] Desaguliers Desaguliers begins: 'As far as I can learn, Monsieur Leibnitz was the first that oppos'd the receiv'd opinion, concerning the quantity of the force of moving bodies'. Includes one page of engraved figures of experimental apparatus. Subject: Physics Read to the Royal Society on 25 October 1722 Published in Philosophical Transactions as 'An account of some experiments made to prove, that the force of moving bodies is proportionable to their velocities: (or rather that the momentum of moving bodies is to be found by multiplying the masses into the velocities) in answer to such who have sometime ago affirm'd, that that force is proportionable to the square of the velocity, and to those who still defend the same opinion' 1722