Question

Section 11
17. A hot air balloon is an aircraft consisting of a bag, called an envelope, which contains heated air. The
heated air inside makes it buoyant since it has a lower density than the colder air outside. Sam is riding on
the hot air balloon after reaching a height of a metres at point K spots a parked car at point Mat an angle
of depression df 30°. The balloon rises further by 50 m at point L. He spots the same car at an angle of
depression of 45°.
TK
i) The relation between height a and distance d between point M and N is given by
a) a=3d
b) d=v3/a
c) d=v3a
d) d=3a
ii) If the balloon rises further 50m the relation between new height band d is given by
a) d=50+b
b) b=50-d
c) d=b
d) b=50+d
Mi) What is the distance KN ?
a) 36.5m
b) 68.49m
c) 28.9m
d) 86.5m
iv) What is the distance MN?
a) 86.5m
b) 118.49m
c) 78.9m
d) 136.5m​

Answer 1

Answer:

1 is c D=v3a

2 is a d=50+b

3 is a 36.5m

4 is b 78.9m