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Week 17 Science
Forces and Motion
Question | Answer |
---|---|
Newton´s First Law | that states a body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force. |
Newton´s Second Law | force is the product of mass and acceleration |
Newton's Third law | states that for every action (force) in nature there is an equal and opposite reaction. |
Force | a push or pull that acts on an object. |
Force | measured in Newtons (N) |
acceleration. | The rate at which the speed or the direction of motion of an object changes over time is its |
Inertia | the tendency of an object to resist any change in motion. |
Contact Force. | Type of force that requires two pieces of matter to touch |
Friction | the force that results when two materials rub against each other. |
The amount of friction between two objects | depends on their texture, shape, speed, and weight. |
Non-Contact force. | A force that acts at a distance |
magnetic force | An example of a non-contact force |
divide the distance by the time. | To determine the speed that a car is traveling |
If a car travels 200 miles and takes 3 hours to get to its destination you would divide 200 miles by 3 hours to determine the speed (miles per hour) | 120mi ÷ 2hrs = 60mph |