Speed cameras are used to detect motorists who break the speed limit. A number of line 2 m apart are painted on the road.As a speeding car crosses the painted lines, the camera takes two photographs 0.5 second (s) apart.
The speed of the car speed of the car in the photographs is

10 m/s

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14.4 m/s

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70 m/s

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28 m/s

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Solution

The correct option is B 14.4 m/s
The distance between them is 2 m
As we the formula of speed or velocity
That is speed= distance/ time
So in order to calculate the speed or velocity is
Velocity= 2/0.5
That is 4 m/sec
The speed of car in photograph is 4 m/sec
Now lets convert it into Km/hr
So that will be 14.4 Km/hr.

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Speed cameras are used to detect motorists who break the speed limit. A number of line 2 m apart are painted on the road.As a speeding car crosses the painted lines, the camera takes two photographs 0.5 second (s) apart.The speed of the car speed of the car in the photographs is

Speed cameras are used to detect motorists who break the speed limit. A number of line 2 m apart are painted on the road.As a speeding car crosses the painted lines, the camera takes two photographs 0.5 second (s) apart.
The speed of the car speed of the car in the photographs is