PHYSICAL SCIENCE EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED BY EXPERT GRADED A+
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PHYSICAL SCIENCE EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED BY EXPERT GRADED A+
Gailileo's demonstration at the Leaning Tower of Pisa..
a) confirmed Aristotle's teachings
b)refused Aristotle's teachings
c)failed in their purpose
d)none of the above
B
Galileo said that if you rolled ...
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PHYSICAL SCIENCE EXAM QUESTIONS WITH COMPLETE SOLUTIONS
VERIFIED BY EXPERT GRADED A+
Gailileo's demonstration at the Leaning Tower of Pisa..
a) confirmed Aristotle's teachings
b)refused Aristotle's teachings
c)failed in their purpose
d)none of the above
B
Galileo said that if you rolled a ball along a level surface it would
A) slow down due to its natural tendency to come to rest.
B) keep rolling without slowing down if no friction acted upon it.
C) roll as long as its inertia nudged it along.
D) eventually roll in the opposite direction
B
When Galileo rolled a ball down an incline and up another incline, he found that
the ball rolled nearly to
A) its initial height. B) halfway its original height. C) three-quarters its original
height. D) higher than its original height
A
,A 1-kg block of iron weighs about
A) 1 N. B) 5 N. C) 10 N. D) more than 10 N
C
Compared with a 1-kg block of solid iron, a 2-kg block of solid iron has twice as
much
A) inertia. B) mass. C) volume. D) all of the above E) none of the above
D
An object that has twice as much mass as another object also has twice as much
A) inertia. B) velocity. C) gravitational acceleration. D) volume. E) all of the above
A
7. Compared with the mass of an apple on Earth, the mass of the same apple on
the Moon is
A) less. B) more. C) the same.
C
Your weight is
A) another word for your mass. B) the gravitational attraction between you and
Earth. C) a property of mechanical equilibrium. D) the same in all locations
B
,A 10-kg mass at Earth's surface weighs about
A) 1 N. B) 5 N. C) 10 N. D) 100 N. E) 1000 N
D
10. A baseball weighs 1.5 N on Earth. Another type of ball weighs 1.5 N on the
Moon. The ball with the greater mass is the
A) baseball. B) other type of ball. C) same for each. D) not enough information
B
11. A girl pushes a cart to the left with a 100-N force. At the same time a boy
pushes it to the right with a 50-N force. The net force exerted on the cart is
A) 50 N to the left. B) 50 N to the right. C) 100 N to the left. D) 100 N to the right.
A
12. An object is pulled with two forces, 10 N northward and 15 N southward. The
magnitude of the net force is
A) 0 N. B) 5 N. C) 10 N. D) 15 N. E) none of the above
B
13. A 50-N object falling in air experiences 30 N of air resistance. The net force on
the falling object is
A) 0 N. B) 20 N. C) 50 N. D) 80 N.
B.
, 14. Given that two forces of 10 N and 15 N act horizontally on an object, the net
force must
A) be 5 N. B) be 25 N. C) be either 5 N or 25 N. D) lie between 0 N and 25 N.
C
15. A pair of 3-N and 4-N forces CANNOT have a resultant of
a) 0 N. b) 1 N. c) 7 N. d) But it can have any of the above.
A
16. The equilibrium rule ΣF = 0 applies to
A) objects or systems at rest. B) objects or systems in uniform motion in a
straight line. C) both of the above D) neither of the above
C
17. Whenever the net force on an object is zero, its acceleration
A) may be zero. B) is zero. C) and velocity are the same. D) none of the above
B
18. Burl and Paul have a total weight of 1300 N. The tensions in the ropes that
support the scaffold they stand on add to 1700 N. The weight of the scaffold itself
must be
A) 400 N. B) 500 N. C) 600 N. D) 800 N.
A
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