The Speed of the car is 4m/s.
What is the speed?
The speed of an object can be defined as the total distance traveled by it in a particular interval of time. This can be determined by dividing the total distance moved by the object by the time taken to move.
It is the ratio of distance in m and time taken by the object to travel in seconds.
Hence: Distance D=28m
Time T=7s
Speed S=D/T
S=28m/7S
S=4m/S
Therefore car's speed is 4m/S
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The speed of the car is 4m/s
Speed is the rate of change of distance with time.
It is a scalar quantity and it's S.I unit is given as m/s. Distance is the space or gap between two point. Speed can generally be defined as the distance travelled per a given time
From the definition, speed = distance/time
distance is 28m and time is 4s, therefore
Speed = 28/4= 7m/s.
Therefore the speed of the car is 7m/s
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