The S.I. unit of speed is-kmminutekmsecondD. Answer the following questions in brief.1. A boy walks to his school with a constant speed of 4 kmhour3.Two Cars, A and B, (starting at the same time, from the same point) are movingwith average speeds of 40 kmh, respectively, in the same directionFind how far will Car B be from Car A after 3 hours.4. A car moves with a speed of 40 kmh for the next 15 minutes. Find the total distance covered by the car inthese 30 minutes,5. Define the term ‘Periodic motion. Give two examples of periodic motions thatcan be used to measure time.
6. The S.I. unit of speed is-kmminutekmsecondD. Answer the following