Question 11
(a) A boy runs 200 metres in 24 seconds. What is his speed in km/h?
(b) If the speed of a man is 45km per hour, then what is the distance traveled by him in 30 seconds?
(c) A train 575m long crosses a tunnel of length 325m in 90 sec. What is the speed of the train in km/h?
(d) A train traveling at 60km/h crosses a man in 6 seconds. What is the length of the train in metre?
(e) A car takes 4 hours to cover a distance, if it travels at a speed of 40 m/h. What should be its speed to cover the same distance in 16 hours?
(f) How long will a boy take to run round a square field of side 35 meters, if he runs at the rate of 9 km/h? (in second)
(g) A train 150 m long is running with a speed of 54 km per hour. In what time will it pass a telegraph post?
(h) A train passes through a telegraph post in 9 seconds moving with a speed of 54 km per hour. What is the length of the train in metre?
Conventions: the man in (d) is stationary; trains fully clear the person/post/tunnel. In (e), retain the printed m/h (metres per hour), not km/h.
Answer entry: (a)–(h), in order, with units km/h; m; km/h; m; m/h; seconds; seconds; m. Enter only the eight numbers, separated by semicolons.
**Editorial input note:** Use no spaces before or after semicolons.
(b) If the speed of a man is 45km per hour, then what is the distance traveled by him in 30 seconds?
(c) A train 575m long crosses a tunnel of length 325m in 90 sec. What is the speed of the train in km/h?
(d) A train traveling at 60km/h crosses a man in 6 seconds. What is the length of the train in metre?
(e) A car takes 4 hours to cover a distance, if it travels at a speed of 40 m/h. What should be its speed to cover the same distance in 16 hours?
(f) How long will a boy take to run round a square field of side 35 meters, if he runs at the rate of 9 km/h? (in second)
(g) A train 150 m long is running with a speed of 54 km per hour. In what time will it pass a telegraph post?
(h) A train passes through a telegraph post in 9 seconds moving with a speed of 54 km per hour. What is the length of the train in metre?
Conventions: the man in (d) is stationary; trains fully clear the person/post/tunnel. In (e), retain the printed m/h (metres per hour), not km/h.
Answer entry: (a)–(h), in order, with units km/h; m; km/h; m; m/h; seconds; seconds; m. Enter only the eight numbers, separated by semicolons.
**Editorial input note:** Use no spaces before or after semicolons.