Question

A train travels 30 Km of its journey in 20 min, the next 20 Km in 20 min and next 50 Km in 20 min . find its average speed in Si unit.​

Answer 1

Answer:

Total distance covered by the car - 30km + 20km + 50km = 100km

Total time taken by the car - 20 min + 20 min + 20 min = 60 mins

Average speed of the car - 100/60 = 5/3 km/hr

To find the speed in SI Unit (m/sec) we need to multiply the speed to 5/18

= 5/3 × 5/18 = 25/54 = 2.16 m/s