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  • Suppose the two photographs, shown in Fig. 13.1 and Fig. 13.2 had been taken at an interval of 10 seconds.

11. Suppose the two photographs, shown in Fig. 13.1 and Fig. 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.

Answers (3)

best_answer

Given, Scale: 1\ cm = 100\ m

The blue car is the fastest.
Distance travelled by the blue car in the picture= 2\ cm
\therefore 2\ cm = 200\ m

Therefore, actual distance travelled by blue car = 200\ m

Time taken = 10\ sec

Speed of the blue car = \frac{distance}{time\ taken}

= \frac{200}{10} = 20

Therefore, Speed of the blue car is  20\ m/s

Posted by

HARSH KANKARIA

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2p

Posted by

Shivam Jaga

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Given, Scale: 1\ cm = 100\ m

 

The blue car is the fastest.

Distance travelled by the blue car in the picture= 2\ cm

\therefore 2\ cm = 200\ m

 

Therefore, actual distance travelled by blue car = 200\ m

 

Time taken = 10\ sec

 

Speed of the blue car = \frac{distance}{time\ taken}

 

= \frac{200}{10} = 20

 

Therefore, Speed of the blue car is 20\ m/s

 

 

Posted by

Yuvraj Singh Sisodia

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