31.   The forces on him are no longer equal and he also starts to accelerate upwards.

32.   The other driving force is cold cash and order books.

33.   The President has been arrested, and the rebel forces are now in control.

34.   The rebel forces are in full retreat.

35.   There appeared to be considerable force in that submission.

36.   This collision changes the velocity of the second particle, just as if there had been a force between the two matter particles.

37.   This force is universal, that is, every particle feels the force of gravity, according to its mass or energy.

38.   This is because the gravitational forces are appreciable over much larger distances than the non-gravitational forces.

39.   We also have to specify exactly how the forces are to act between one ball and another.

40.   All available forces are under arms.