1. Complete the table:
Speed
Time
Distance
(a) 960 km
1 hour 50 minutes
(b) 15 m/sec
10 hour
(c) 250 cm/sec
15.5 seconds
2
.
Determine the time taken when:
(a) Distance = 7150 km, speed = 780 km/h
2.
(b) Distance = 8 m, speed = 8 cm/sec
5
(c) Distance = 27 km, speed = 45 km/h
182/
3. How far will an aeroplane fly in 7 hours 30 minutes at a sneed of 676 la
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Answer:
.. . 1 m # 100 cm 10 m = 1000 cm 100 Time taken to cover 10 m-1 × 1000 = 100 s EXERCISE 11 (B) nd out the distance covered when: speed = 960 km/h, time = 1 hour 50 minutes speed = 15 m/sec, time = 10 hour speed 250 cm/sec, time 15.5 seconds ermine the time taken when: distance 7150 km, speed 780 km/h distance =8 m, speed = 8-cm/sec distance 27 km, speed 45 km/h far will an aeroplane fly in 7 hours 30 minute 2 une number. Some pat of a journey of 780 km was made by car with a speed of 60 km/h and the remaining journey was made by train with speed of 100 km/. If total time required was 9 hours, find the time taken by train ad distance covered by train.
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