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speed and velocity
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Give an example of speed
car is moving at a speed of 60km/h
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velocity is different from speed because it includes
direction
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What is a speed?
is a measure of distance travelled over time
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What is velocity?
is a measure of displacement over time
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What is a distance?
refers to how much ground is covered by an object in motion
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what is the basic formula for speed
speed= Distance
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a person walks 5km north and then 5km south, what is the person's displacement?
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speed is a __________ quantity
scalar
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what do we call the speed of an object in a specific direction?
direction
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if an object travel at a constant speed in a straight line its velocity is
constant
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if an object changes direction by maintains the same speed, its velocity
changes
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which affects velocity but not speed
direction
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if a car covers 100km in 2hrs, what is the speed?
50km/h
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give an example of distance
if a car travels east for 60km and takes a turn to travel north for another 60km, the total distance travelled by car shall be 120km
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what is the unit of the speed?
m/sec
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give an example of velocity
car is moving at a speed of 60km/h in the east direction
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