| INERTIA | Law-of-motion subject |
| NEWTON | Scientist born at Woolsthorpe Manor whose work Principia expounds his laws of motion and law of universal gravitation (6) |
| SECOND | Newton's ___ law of motion states that the rate of change of momentum of a body is directly proportional to the external force acting on it (6) |
| THRUST | Propulsive property, as of a jet or rocket engine, explained by Newton's third law of motion (6) |
| AXIOM | Newton's law of motion, e.g. |
| FORCE | Vector in Newton's second law of motion |
| ISAAC | First name of the scientist whose three laws of motion form the basic principles of classical mechanics (5) |
| EDMOND | Forename of the astronomer who used Newton's laws of motion to predict the return of the comet that was later named in his honour (6) |
| VAINNEWTON | Egotistical describer of laws of motion? |
| ISAACNEWTON | Formulator of laws of motion (5,6) |
| EQUAL | "To every action there is always opposed an - reaction", according to Newton's third law of motion (5) |
| KEPLER | Johannes ---, found laws of motion |
| HALLEY | Astronomer who used Newton's laws of motion to predict the periodical comet that bears his name (6) |
| VELOCITY | A measure of the rate of motion of a body expressed as the rate of change of its position in a particular direction with time |
| DIRECTION | Inertia of ___ is that property of a body by virtue of which it is unable to change its direction of motion on its own (9) |
| SWOOSH | An onomatopoeia, logo etc conveying the sound of a rush of air/liquid or of motion/speed (6) |
| MOMENTUM | In physics, the quantity of motion of a moving body, equal to the product of the mass and the velocity (8) |
| IRE | Inf. of the basic verb of motion |
| STEADICAM | What takes motion out of motion pictures? |
| FLAGELLA | Organs of motion of many microorganisms |
