YASH CLASSES
MOTION IN
A PLANE [ XI
]
1. An aircraft is
flying at a height
of 3400 m above
the ground . If the
angle subtended at
a ground
observation point the aircraft
position 10s apart
is 30°,what is
the speed of aircraft
?
2. An aircraft
is flying at a
height of 2500 m above
the ground . If the
angle subtended at
a ground
observation point the aircraft
position 25 s apart
is 45°,what is
the speed of aircraft
?
3. Distance
between two points
is 10 km . A dishonest cab man takes him
along a circuitous
path
23 km long and
reaches the hotel
in 28 minutes .
What is (a) the
average speed of the
taxi
(b) magnitude of
velocity ? are equal ?
4. Distance
between two points
is 25 km . A dishonest cab man takes him
along a circuitous
path
50 km long and
reaches the hotel
in 30 minutes .
What is (a) the
average speed of the
taxi
(b) magnitude of
velocity ? are equal ?
5. A dart is thrown horizontal
toward the bull eye’s point P
on the dart with initial speed 10m/s. If
hits
at
point Q on the rim vertically
below P , 0.19s later
(a) what is the distance of PQ ?
(b) How
far away from
the dart board
did
the dart
thrower stand ?
6. . A dart is thrown horizontal
toward the bull eye’s point P on the dart with initial speed 5m/s. If hits
at
point Q on the rim vertically
below P , 0.20s later
(a) what is the distance of PQ ?
(b) How
far away from
the dart board
did
the dart
thrower stand ?