Physics, 09.12.2019 11:31, phillipfruge3
1) which force is always perpendicular (90 degree angle) to a surface. so, if you are sitting on the floor, what is the name of the force "the floor pushes up on you"?
a) normal
b) friction
c) weight
d) tension
2) which of these statements is always true?
a) a moving object in equilibrium can change its direction but not its speed.
b) if an object is moving, a net force is acting on it.
c) an object in equilibrium must not be in motion.
d) a moving object in equilibrium continues at a constant velocity.
3) choose the force that always acts opposite the direction of the motion. so, if a car is moving forwards, what force would act backwards?
a) friction
b) weight
c) applied
d) normal
4) which of these would you include in a free body diagram of a coin sitting on a table?
a) the table
b) the forces of the coin pushing down on the table
c) room, to depict the physical setting
d) the force of gravity (weight) acting on the coin
Answers: 1
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In science and physics what is the standard unit of measure for speed?
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Physics, 22.06.2019 10:50, infinitexero1022
Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k
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Physics, 22.06.2019 17:50, arunamvr
Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system
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1) which force is always perpendicular (90 degree angle) to a surface. so, if you are sitting on the...
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