Question

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

Answer 1

As to find out the speed of car in the photograph is given as

• As given that the camera takes the photo in 0.5 sec
• 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.

Answer 2

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.