1. Net force causes an object at rest to start moving 2. Friction is perpendicular to the surfaces that are in contact. 3. Field forces do involve physical contact between two objects.

College Physics
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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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TRUE OR FALSE Write true if the statement is correct and if it is false, replace the underlined word to make the statement correct
1. Net force causes an object at rest to start moving
2. Friction is perpendicular to the surfaces that are in contact.
3. Field forces do involve physical contact between two objects.
4. Friction is directed towards the opposite direction of the motion of an
object.
5. Inertia is a reference frame in which object stays either at rest or at a
constant velocity unless force act upon it.
6. Friction depends on the nature of the materials in contact.
7. Equilibrium is when net force on the body is equal to zero.
8. Static friction is practically independent of speed.
9. Free-body diagram have certain rules to follow.
10. Kinetic friction is usually greater than starting friction.
Transcribed Image Text:1. Net force causes an object at rest to start moving 2. Friction is perpendicular to the surfaces that are in contact. 3. Field forces do involve physical contact between two objects. 4. Friction is directed towards the opposite direction of the motion of an object. 5. Inertia is a reference frame in which object stays either at rest or at a constant velocity unless force act upon it. 6. Friction depends on the nature of the materials in contact. 7. Equilibrium is when net force on the body is equal to zero. 8. Static friction is practically independent of speed. 9. Free-body diagram have certain rules to follow. 10. Kinetic friction is usually greater than starting friction.
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