Chapter 12-Force Question Preview (ID: 29298)


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According to Archimedes, the buoyant force on an object is equal to ________________.
a) the weight of the object
b) the fluid pressure on the object
c) the density of the fluid
d) the weight of the fluid displaced

Momentum is the measure of ______________.
a) how hard it is to stop an object
b) the amount of matter in an object
c) the tendency of an object to change its motion
d) the amount of force acting in an object

Forces that are equal in size but opposite in direction are ________________.
a) balanced forces
b) frictional forces
c) inertial forces
d) net forces

Density is given in ________.
a) Pa/cm3
b) N/m2
c) g/s2
d) g/cm3

In a hydraulic system, the force exerted on the large piston is ____________________ the force exerted on the small piston.
a) greater than
b) less than
c) the same as
d) not related to

A feather falls through the air more slowly than a brick because of ________________.
a) gravity
b) air resistance
c) inertia
d) momentum

The relationship among force, mass, and acceleration is stated in ________________.
a) the law of the conservation of momentum
b) Newton's first law of motion
c) Newton's second law of motion
d) Newton's third law of motion

If gravity did not affect the path of a horizontally thrown ball, the ball would ____________.
a) go straight up
b) travel horizontally
c) fall straight down
d) follow a curved path

The upward force on an object falling through the air is ______________.
a) air resistance
b) inertia
c) gravity
d) terminal velocity

A Feather falls through the air more slowly than a brick because of
a) gravity
b) air resistance
c) inertia
d) momentum

When a diver jumps off a diving board, gravity pulls him or her down to the water. What is the reaction force to Earth's gravity?
a) The diver's legs push against the board.
b) Friction between the diver and water slows the diver.
c) Air resistance slows the diver.
d) The diver pulls Earth up.

If you squeeze the bottom of a closed tube of toothpaste, the pressure is increased _______________.
a) on the bottom of the tube
b) on the top of the tube
c) on the sides of the tube
d) everywhere in the tube

Newton's first law of motion states that an object remains at rest unless a ___________ force acts on it.
a) balanced
b) frictional
c) gravitational
d) net

I f you exert a force on an object in motion, you will change its __________________.
a) mass
b) weight
c) inertia
d) momentum

When a toy truck collides into a toy car, the momentum of ____________ is the same before and after the collision.
a) the truck
b) the car
c) the truck times the car
d) the truck plus the car

If you are standing on both feet and then stand on one foot, you have ______________________________ the pressure on the ground.
a) increased
b) decreased
c) not changed
d) depends on your motion

If you blow between tow table tennis balls suspended about 2 cm apart, the balls will __________________.
a) not move
b) move away from each other
c) move back and forth
d) move toward each other

If you are standing on one foot and then put both feet down, you have ________ the force on the ground.
a) increased
b) decreased
c) not changed
d) can't tell

The statement for every action there is an equal but opposite reaction is a statement of ______________.
a) the law of of the conservation of momentum
b) Newton's first law
c) Newton's second law
d) Newton's third law

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