Speed of 36 km/hr ___ Speed of 12 m/sec
A car travels at 54 km/hr for first 20 secs , 36 km/hr for next 30 secs and finally 18 km/hr for next 10 secs. Find its average speed.
A car covers a distance of 400km at a certain speed. Had the speed been 12 km/hr more, the time taken for the journey would have been 1 hour 40minutes less. Find the original speed.
What is the time taken by a 100 m long train travelling at a speed of 36 km/hr to cross a bridge of length 80 m?
What is the relative speed when a train with a speed of 56 Km/hr
(i) crosses a bridge of length 150m
(ii) when it crosses another train of speed 36 Km/hr which also moves in the same direction.