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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1) which force is always perpendicular (90 degree angle) to a surface. so, if you are sitting on the...
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