10. An aeroplane leaves an Airport and files due north at 400 km/h. At the
the same time, another aeroplane leaves the same Airport and flies due
west at 300 km/h.
(1) Distance travelled by the first aeroplane in 1.5 hours is
(a) 450 km
(b) 700 km
(c) 600 km
(d) 800 km
(ii) Distance travelled by the second aeroplane in 13 dhyaats
(a) 450 km
(b) 600 km
(c) 800 km
0 km
(iii) Which of the following line segment shows the distance be ween both the croplanes?
(a) OA
(C) OB
W8
(iv) Which aeroplane travelled longer distance and by how many km?
(a) First, 150 km (b) Second, 400 km (c) First, 600 km (d) First, 800 km
(b) AB
(d) 150 km
(v) How far apart the two aeroplanes would be after 1.5 hours?
(a) 600 km
(b) 750 km
(c) 300 km
Answers
Answer:
v
Step-by-step explanation:
CASE STUDY: An aeroplane leaves an Airport and flies due north at 300 km/h. At
the same time, another aeroplane leaves the same Airport and flies due west at
400 km/h.
i. Distance travelled by the first aeroplane in 1.5 hours
a. 450 km b. 300 km c. 150 km d. 600 km
ii. Distance travelled by the second aeroplane in 1.5 hours
a. 450 km b. 300 km c. 150 km d. 600 km
iii. Which aeroplane travelled a long distance and by how many km?
a. Second, 150 km b. Second, 250 km
c. First, 150 km d. Fist, 250 km
iv. How far apart the two aeroplanes would be after 1.5 hours?
a. 600 km b. 750 km c. 300 km d. 150 km
Answer:
Distance travelled by first aeroplane in1 1/2 hours = 300 × 3/2 km = 450 kmand that by second aeroplane =400 × 3/2 km = 600 kmPosition of the two aeroplane after 1 1/2 hours would be A and B as shown in Fig. 6.14. Thus the two aeroplanes will be 750 km apart after1 1/2 hours.
Step-by-step explanation:
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