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Chp 2 Physical Science

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1.
1 point
Which kind of forces create a net force of zero?
2.
1 point
Newton's First Law of Motion states that if a net force of an object is zero, the motion of the object remains unchanged.
3.
1 point
Contact forces can be weak.
4.
1 point
__________ friction prevents surfaces from passing past each other.
5.
1 point
What causes an object in motion to remain in motion?
6.
1 point
Newton's first law of motion applies to ______ forces acting on an object.
7.
1 point
In all collisions, momentum is transferred from one object to another.
8.
1 point
_______ friction opposes the motion of surfaces sliding past each other.
9.
1 point
Friction increases momentum.
10.
1 point
Forces have direction.
11.
1 point
When an object is speeding up, the _____ and the _____ are in opposite directions.
12.
1 point
A parachutist falling toward Earth is an example of a non contact force.
13.
1 point
In a force pair, one force is called the ___ force.
14.
1 point
One example of contact forces is Earth's plates pushing against each other.
15.
1 point
What kind of force causes a girl's hair to stand on the end with the use of a balloon?
16.
1 point
A ball with momentum of 16 kgxm/s strikes a ball at rest. What is the total momentum of both balls after the collision?
17.
1 point
Newton's third law of motion describes the force pair between two objects.
18.
1 point
When two or more forces are acting on an object in the same direction, their forces cancel each other out.
19.
1 point
An object's weight is not proportional to its mass.
20.
1 point
Earth has more mass than any other object near you.
21.
1 point
Weight is a force.
22.
1 point
An object can change its velocity by changing its _______.
23.
1 point
For every action, there is a reaction force that is equal in strength and acting in the same direction.
24.
1 point
A contact force is a push on one object by another that is not touching it.
25.
1 point
According to Newton's first law of motion, balanced forces cause no change to an object's _____,
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