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Samuels PS Force
Test Description: Physical Science Force
Instructions: Answer all questions to get your test result.
1) When air resistance stops a falling object from speeding up, the object has reached its _________ velocity.
A
free-fall
B
terminal
C
drag
D
Cavendish
2) What type of friction affects sliding objects already in motion?
A
static
B
rolling
C
kinetic
D
coefficient
3) What type of friction prevents objects from moving?
A
static
B
rolling
C
kinetic
D
coefficient
4) Which of the following surfaces would offer the least friction for a moving object?
A
Carpet
B
Pavement/Roads
C
Grass
D
Ice
5) A force that causes objects to travel in a curved path rather than a straight line is _____ force.
A
centrifugal
B
gravitational
C
centripetal
D
friction
6) The discovery of the law of universal gravitation is credited to which scientist?
A
Ernest Rutherford
B
Isaac Newton
C
Galileo Galilei
D
Henry Cavendish
7) Two objects attracting each other through force proportional to their masses is stated in the:
A
Law of Universal Gravitation
B
Law of Motion
C
Law of Acceleration of Gravity
D
Law of Universal Force
8) Rubbing two pieces of sandpaper together demonstrates which cause of friction?
A
repulsion
B
none of these
C
denaturing
D
attraction
9) What is the SI unit for force?
A
Newton
B
Joule
C
Watt
D
Coulomb
10) Weight is:
A
the gravitational force on an object
B
the mass of an object
C
the amount of drag an object produces
D
velocity through space
*select an answer for all questions
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