Suppose the two photographs, shown in figures had been taken at an interval of $10$ seconds. If a distance of $100$ metres is shown by $1$ cm in these photographs, calculate the speed of the blue car.

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Solution

From the figures , we conclude that the distance covered by blue car is 1 cm.

So, the distance covered $= 100 m$
Time taken $= 10 s e c o n d s$

Speed $= \frac{D i s t a n c e}{T i m e} = \frac{200}{10} = 20 m / s$

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Suppose the two photographs, shown in Figure 13.1 and Figure 13.2, had been taken at an interval of 10 seconds. If a distance of 100 metres is shown by 1 cm in these photographs, calculate the speed of the fastest car.

Figure 13.1 Vehicles moving in the same direction on a road

Figure 13.2 Position of vehicles shown in Figure 13.1 after some time

Suppose the two photographs, shown in Figure 1 and Figure 2, had been taken at an interval of 10 seconds. If a distance of 100 metres is shown by 1 cm in these photographs, calculate the speed of the blue car.

Figure 1 Vehicles moving in the same direction of on a road

Figure 2 Position of vehicles shown in Figure 1 after some time

Question 11
Suppose the two photographs, shown in Fig. 1 and Fig. 2, had been taken at an interval of 10 seconds. If a distance of 100 meters is shown by 1 cm in these photographs, calculate the speed of the blue car.

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Q. The dipper in a ripple tank vibrates at a frequency of

4.0 H z

and the resulting wave pattern is photographed. The distance between the two crests shown is

20 c m

. What is the speed of the wave ?

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Suppose the two photographs, shown in figures had been taken at an interval of 10 seconds. If a distance of 100 metres is shown by 1cm in these photographs, calculate the speed of the blue car.

From the figures , we conclude that the distance covered by blue car is 1 cm.So, the distance covered =100m Time taken =10 seconds Speed=DistanceTime=20010=20m/s

Suppose the two photographs, shown in figures had been taken at an interval of $10$ seconds. If a distance of $100$ metres is shown by $1$ cm in these photographs, calculate the speed of the blue car.

From the figures , we conclude that the distance covered by blue car is 1 cm.

So, the distance covered $= 100 m$
Time taken $= 10 s e c o n d s$

Speed $= \frac{D i s t a n c e}{T i m e} = \frac{200}{10} = 20 m / s$