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Category 2
$600
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$600
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Motion
An object is in __ when its position with respect to a frame of reference changes over time
Category 1: $200
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The distance
The length of the trajectory travelled
Category 1: $400
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The position
The place where you are at any time with respect to the origin of the frame of reference
Category 1: $600
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Velocity
__ is a vector that tells us how fast something moves and in which direction
Category 1: $800
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The displacement
The difference in the position of the body between any two instants in time
Category 1: $1000
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Inertia
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Newton’s first law of motion is called the law of ___
Dynamometer; newton (N)
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Weight is measured with a __ and its unit is ___
Instantaneous velocity
Speed of a body at a given moment
Category 2: $600
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Acceleration
A quantity that describes change in velocity (speed and direction)
Category 2: $800
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Metres per second (m/s)
The SI unit of velocity and speed is __
Category 2: $1000
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Newton’s first law of motion
(which law?) An object remains at rest or in uniform rectilinear motion with the same speed if no force acts on it
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Average speed
Distance travelled divided by total time spent
Category 3: $400
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False: Mass is invariable
True or false? Mass is variable – its value is the same anywhere in the Universe
Category 3: $600
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Numerical Value
The ___ ___ of the average velocity will coincide with the average speed if the direction of the movement doesn’t change
Category 3: $800
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A force that occurs on the surface between two bodies when one of them moves - or tries to move - over the other
Its direction is parallel to the surfaces that are in contact
Its point of application is at the centre of gravity of the body
Category 3: $1000
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What is friction and name two of its characteristics
Metres per second squared (m/s2)
SI unit of acceleration
Category 4: $200
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Speed
The numerical value of the velocity
Category 4: $400
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Average velocity
Displacement divided by the time
Category 4: $600
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Newton’s third law of motion
(Which law?) When two bodies interact, the forces exerted on each other have identical magnitude but opposite directions
Newton’s third law of motion
Category 4: $800
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Acceleration
Final velocity minus initial velocity divided by time
Category 4: $1000
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Kilogram (kg)
The unit of mass is __
Category 5: $200
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The force acting on a body and the acceleration it produces are directly proportional, where the mass of the body is in the constant of proportionality
What is Newton’s second law of motion?
Category 5: $400
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Action and reaction
In Newton’s third law of motion, one of the forces is called __ and the other is called __
Category 5: $600
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FALSE: centre of the earth
True or false? Weight is defined by a numerical value and a direction, which always points towards the end of the Earth
Category 5: $800
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The amount of matter in a body
Mass is a measurement of what?
Category 5: $1000
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