Physical Science chapter 12

QuizÂ by Melissa Knox

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21 questions
• Q1
The law that states that every object maintains constant velocity unless acted on by an unbalanced forces is
Newton's second law of motion
Newton's third law of motion
Newton's first law of motion
the law of conservation of momentum
30s
• Q2
The law that states for every action force there is an equal and opposite reaction force is
Newton's first law of motion
the law of conservation of momentum
Newton's third law of motion
Newton's second law of motion
30s
• Q3
The law that states that the unbalanced force acting on an object equals the object's mass times its acceleration is
Newton's third law of motion
Newton's second law of motion
the law of conservation of momentum
Newton's first law of motion
30s
• Q4
Which of the following equations is correct?
w=g/m
w=mg
w=m/g
w=g + m
30s
• Q5
What is the unbalanced force that slows down a ball rolling across the floor?
the force of gravitiy
the force of inertia
the force of friction
the force of momentum
30s
• Q6
If two objects with different masses and traveling with different velocities collide, what law allows you to predict the motion of the objects after the collision?
the law of conservation of momentum
Newton's second law
the law of universal gravation
Newton's third law
30s
• Q7
Which object has the greatest inertia?
a bowling ball
a volleyball
a tennis ball
a beach ball
30s
• Q8
A seat belts helps you when your car stops suddenly by providing a(n)
unbalanced forward force
balanced forward force
balanced backward force
unbalanced backward force
30s
• Q9
What unbalanced force is needed to give a 976 kg vehicle an acceleration of 2.50 m/s2?
390 N
2440 lbs
2440 N
390 lbs
30s
• Q10
If an equal force is applied to two cars of equal mass, Car A and Car B, Car A will have _____ acceleration as (than ) Car B.
the opposite
greater
the same
less
30s
• Q11
Which of the following objects exerts a gravitational force?
a bowling ball
all of these
a feather
a book
30s
• Q12
When an object is in free fall, the only force acting on it is
terminal velocity
friction
inertia
gravity
30s
• Q13
orbital motion is a combination of
acceleration and gravity
forward motion and free fall
mass and friction
weight and vertical velocity
30s
• Q14
Astronauts "float" when inside an orbiting spaceship because they are
outside Earth's gravity
weightless
in a vacuum
in free fall
30s
• Q15
The force exerted on the racket by a hit tennis ball is the
gravitational force
acceleration
reaction force
action force
30s

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