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CBA Science #6 1-12
Terms in this set (22)
Newton's 3rd Law of Motion
Every action has an equal and opposite reaction.
The amount of matter that something is made of. The object's value does NOT change with the objects location in the universe.
A force of attraction between objects that is due to their masses.
Newton's 1st Law of Motion
An object in motion tends to stay in motion, and an object at rest tends to stay at rest, unless the object is acted upon by an unbalanced force.
Newton's 2nd Law of Motion
The acceleration of an object is dependent on the force upon the object and the mass of the object.
The SI unit of force (N).
A measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe.
A force that opposes motion between two surfaces that are touching.
A push or a pull; all forces have both size and direction.
The rate at which an object moves; depends on the distance traveled and the time taken to travel that distance.
An object's change in position relative to a reference point over a period of time.
The tendency for an object to resist a change in motion.
The overall force on an object after all the forces are added together is called ___ force.
Adding force acting in one direction to a force acting in another direction is the same as adding a _____ number and a _____ number.
When there is net force acting on an object, the force is said to be _____.
Equal forces acting on one object in opposite directions are called _____.
When you add equal forces exerting in opposite directions, the net force is _____.
The forces represented by the arrows in the diagrams are applied to the three objects ara at rest on a table. which object is most likely to move right?
Which object has a net force of zero?
to lift weights
A pulley would be most helpful if used _______?
A speed boat traveled 100 km in 20 minutes. what was the speed of the boat?
Alex rode his bike 60km in 3 hours. How fast was Alex traveling?