Question

A car travels 4 km in 3 mij.find the speed pf car in cm/s

Answer 1

solution.

Speed of car= 4km/3 min

= 4* 1000*100/ 3* 60

= 4*10000/ 18

= 20000/9

= 2,222.22m/sec.

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Answer 2

Answer: 20000 cm/s

Explanation:       4km = 4*1000  = 4000 m * 100 = 400000 cm

                            3min = 3/60     = 0.05 s

                           

    thus ,      

 4km / 3m = 400000* 0.05 = 20000 cm /s.