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Physical Science -ch 12
ch 12 flash cards
20
Science
9th Grade
10/05/2010

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Cards

Term
Weight
Definition
-the force of an object due to gravity
Term
Law of Universal Gravitation
Definition
-all objects in the universe attract each other

through gravity
1) force increases as one or both masses increase
2) force decreases as distance decreases
Term
Terminal velocity
Definition
-when air resistance and weight are equal, the object stops accelerating and reaches ______ _______
Term
Third
Definition
Which law?
-two cars hit on
Term
Second
Definition
-positioning of football players: massive players on the line with lighter (faster) players in the back field
Term
Second
Definition
-a loaded versus an unloaded truck
Term
Second
Definition
Which law?
-hitting a baseball, the harder the hit, the faster the ball goes
Term
Third
Definition
Which law?
-jumping out of a boat onto the dock
Term
Free Fall
Definition
-in the absence of air resistence all objects falling near the Earth's surface accelerate at the same rate regardless of mass
Term
Third
Definition
-rockets leaving earth
Term
Projectile motion
Definition
-curved path followed by an object that is thrown, launched, or projected near surface of Earth
Term
Horizontal and Vertical
Definition
-two components of projectile motion
Term
Second?
Definition
Which law?
-accelerating or decelerating a car
Term
Momentum
Definition
-the quantity defined as the product of the mass and velocity of an object
Term
Third
Definition
-guns being fired
Term
Third
Definition
Which law?
-pool or billiards
Term
First
Definition
What law?
-a car stops suddenly and you strain against the seat belt
Term
First
Definition
-the magician pulls the tablecloth out from under a table full of dishes
Term
First
Definition
Which law?
-car turns left and you appear to slide to the right
Term
First
Definition
Which law?
-when riding a horse, the horse suddenly stops and you fly over its head
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