Laws of Motion
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Sir Isaac Newton discovered three laws of motion: 1) An object at rest stays at rest and an object in motion stays in motion unless acted on by an unbalanced force. This is known as the law of inertia. 2) Acceleration is produced by a force acting on a mass, with greater force needed to accelerate objects with greater mass. 3) For every action, there is an equal and opposite reaction.
Laws of Motion
- 1. Sir Isaac Newton First Law of Motion Second Law of Motion Third Law of Motion
- 3. An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This law is often called "the law of inertia".
- 7. Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
- 11. For every action there is an equal and opposite re-action.
- 14. The rocket's action is to push down on the ground with the force of its powerful engines, and the reaction is that the ground pushes the rocket upwards with an equal force.