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What decreases friction?
inertia
speed and direction
smooth surfaces
friction
both the mass of the object and the size of the force
Its motion and acceleration are in opposite directions.
The net force of the two teams is zero.
inertia
What happens when a ball rolls uphill?
inertia
speed and direction
smooth surfaces
friction
both the mass of the object and the size of the force
Its motion and acceleration are in opposite directions.
The net force of the two teams is zero.
inertia
Why do passengers in a car move forward when the car comes to a sudden stop?
inertia
speed and direction
smooth surfaces
friction
both the mass of the object and the size of the force
Its motion and acceleration are in opposite directions.
The net force of the two teams is zero.
inertia
The velocity of an object is the _____________of the object.
inertia
speed and direction
smooth surfaces
friction
both the mass of the object and the size of the force
Its motion and acceleration are in opposite directions.
The net force of the two teams is zero.
inertia
The tendency of an object to stay at rest and the tendency of an object in straight-line motion to continue moving is ________
inertia
speed and direction
smooth surfaces
friction
both the mass of the object and the size of the force
Its motion and acceleration are in opposite directions.
The net force of the two teams is zero.
inertia
The change of motion of an object depends on
inertia
speed and direction
smooth surfaces
friction
both the mass of the object and the size of the force
Its motion and acceleration are in opposite directions.
The net force of the two teams is zero.
inertia
Children are playing tug-of-war, a contest in which each team tugs on a rope to pull the other team across a line. Everyone is tugging on the rope. Why is no one moving?
inertia
speed and direction
smooth surfaces
friction
both the mass of the object and the size of the force
Its motion and acceleration are in opposite directions.
The net force of the two teams is zero.
inertia
Which of the following is the force that resists sliding motion between two surfaces in contact?
inertia
speed and direction
smooth surfaces
friction
both the mass of the object and the size of the force
Its motion and acceleration are in opposite directions.
The net force of the two teams is zero.
inertia
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