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15 questions
A _______________ can pull metal objects containing iron without touching them.
MAGNETS
GRAVITY
________________ forces cause the rope in tug-of-war to move in a certain direction.
UNBALANCED
BALANCED
Forces that work together and make no change in motion are called ______________.
BALANCED
UNBALANCED
Smooth surface cause ____________ friction.
LESS
MORE
You can find the speed of an object if you ______________ distance by time.
DIVIDE
ADD
SUBTRACT
The roller coaster moves at a _____________________ speed.
VARIABLE
CONSTANT
SLOW
A plane that flies steadily at 900 kilometers per hour is moving at a ___________________________.
UNBALANCED
BALANCED
CONSTANT
Which of the following would not affect the motion of an object?
change in mass
balanced forces
greater force
more friction
Ivannah and Irvine are playing volleyball. Ivannah misses to hit the ball. What causes the ball to fall to earth?
friction
speed
gravity
mass
Which will make a bowling ball roll faster?
Increase the distance it rolls.
Apply a greater force
Increase the ball’s weight
Increase the ball’s mass
What always changes when an object is in motion?
Its direction
Its speed
Its mass
Its position
is a noncontact force that pulls objects toward one another
gravity
magnetism
friction
mass
is a noncontact force that pulls on, or attracts metal
gravity
magnetism
mass
motion
a contact force that opposes the motion of an object
gravity
motion
mass
friction
strongest near the magnets poles
magnetic field
magnetism
magnets
magnum
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