Physics 1010 Final exam with |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
correct answers |||\\\
s=d/t - correct answer✔✔average speed=distance traveled/time take
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instantaneous speed - correct answer✔✔average speed over a very small time interval (ex. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
average speed in 1/10 of a second).
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velocity - correct answer✔✔equals speed with direction, instantaneous
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velocity=instantaneous speed (ex. 15 mph north or left ) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
average velocity - correct answer✔✔displacement divided by time taken, displacement is
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distance b/t initial and final locations of the object
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v=change in x/change in t - correct answer✔✔average velocity=change in position/time taken
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a=change in v/change in t - correct answer✔✔average acceleration=change in velocity (m)/
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time taken(s)
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Newtown's first law of motion (law of inertia) - correct answer✔✔the velocity of an object
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remains constant unless an unbalanced force acts on the object
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a=Fnet/m - correct answer✔✔acceleration(m/s^2)=net force(N)/mass (kg)
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Newtown's second law - correct answer✔✔The net force on an object is equal to its mass
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times its acceleration and points in the direction of the acceleration
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, mass vs weight - correct answer✔✔mass=mass is not dependent on location in the universe,
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constant property that depends only on how much there is of x. weight=depends on location in
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universe, object is attracted to earth, depends on strength of gravitational attraction
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W=mg - correct answer✔✔weight (N)=mass (kg)x acceleration due to gravity (m/s^2)
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terminal speed - correct answer✔✔speed where air resistance equals weight, no longer net
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force, acceleration stops, speed remains constant, maximum speed of object
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static friction - correct answer✔✔frictional force equal in size and opposite in direction to
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applied force of object |||\\\ |||\\\ |||\\\
kinetic friction - correct answer✔✔if applied force of object exceeds max static frictional force,
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the object now has acceleration and the existing friction is kinetic friction, it is less than the
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max value of static frictional force, has constant value, independent of the speed of the object
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Newtown's third law - correct answer✔✔If an object exerts a force on a second object, the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
second object exerts an equal force back on the first object
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centripetal force - correct answer✔✔force that acts towards the center of a circle, center- |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
seeking force |||\\\
change in v=vf-vi - correct answer✔✔change in velocity=final velocity minus initial velocity
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a=v^2/r - correct answer✔✔centripetal acceleration=velocity squared/radius
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law of universal gravitation - correct answer✔✔any two objects have a force of attraction
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between them, gravity exists between all objects |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
correct answers |||\\\
s=d/t - correct answer✔✔average speed=distance traveled/time take
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instantaneous speed - correct answer✔✔average speed over a very small time interval (ex. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
average speed in 1/10 of a second).
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velocity - correct answer✔✔equals speed with direction, instantaneous
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velocity=instantaneous speed (ex. 15 mph north or left ) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
average velocity - correct answer✔✔displacement divided by time taken, displacement is
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distance b/t initial and final locations of the object
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v=change in x/change in t - correct answer✔✔average velocity=change in position/time taken
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a=change in v/change in t - correct answer✔✔average acceleration=change in velocity (m)/
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time taken(s)
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Newtown's first law of motion (law of inertia) - correct answer✔✔the velocity of an object
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remains constant unless an unbalanced force acts on the object
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a=Fnet/m - correct answer✔✔acceleration(m/s^2)=net force(N)/mass (kg)
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Newtown's second law - correct answer✔✔The net force on an object is equal to its mass
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times its acceleration and points in the direction of the acceleration
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, mass vs weight - correct answer✔✔mass=mass is not dependent on location in the universe,
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constant property that depends only on how much there is of x. weight=depends on location in
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universe, object is attracted to earth, depends on strength of gravitational attraction
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W=mg - correct answer✔✔weight (N)=mass (kg)x acceleration due to gravity (m/s^2)
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terminal speed - correct answer✔✔speed where air resistance equals weight, no longer net
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force, acceleration stops, speed remains constant, maximum speed of object
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static friction - correct answer✔✔frictional force equal in size and opposite in direction to
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applied force of object |||\\\ |||\\\ |||\\\
kinetic friction - correct answer✔✔if applied force of object exceeds max static frictional force,
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the object now has acceleration and the existing friction is kinetic friction, it is less than the
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max value of static frictional force, has constant value, independent of the speed of the object
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Newtown's third law - correct answer✔✔If an object exerts a force on a second object, the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
second object exerts an equal force back on the first object
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centripetal force - correct answer✔✔force that acts towards the center of a circle, center- |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
seeking force |||\\\
change in v=vf-vi - correct answer✔✔change in velocity=final velocity minus initial velocity
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a=v^2/r - correct answer✔✔centripetal acceleration=velocity squared/radius
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law of universal gravitation - correct answer✔✔any two objects have a force of attraction
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between them, gravity exists between all objects |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
