YASH CLASSES
MOTION IN
A PLANE [ XI
]
7.
A stunt flier is
flying at 15 m/s parallel to the ground 100m
below. how large distance x of
the
plane from the target if a sack
of rice released from
the plane is hit the target ?
8. A stunt
flier is flying
at 30 m/s parallel to the ground
250m below. how large distance x of
the
plane
from the target if a sack
of rice released from
the plane is hit the target ?
9. A fighter
plane flying horizontal
at an altitude of 1.5 km with speed 720
km/h passes directly
overhead an anti-aircraft gun . At what
angle from the vertical should the gun be
fired for the shell with
muzzle speed 600 m/s to hit the plane ? At what minimum altitude should the pilot fly
the plane
to avoid being hit ? [ g = 10m/s2 ]
10. A fighter
plane flying horizontal
at an altitude of
2 km with speed 800 km/h passes directly
overhead an anti-aircraft gun . At what
angle from the vertical should the gun be fired for
the shell with
muzzle
speed 900 m/s to hit the
plane ? At what minimum
altitude should the
pilot fly the
plane
to
avoid being hit ? [ g = 10m/s2
]
11. A fighter
plane flying horizontal
at an altitude of
2.5 km with speed 750 km/h passes directly
overhead an anti-aircraft gun . At what
angle from the vertical should the gun be fired for
the shell with
muzzle speed 500 m/s to
hit the plane ? At what minimum altitude should
the pilot fly
the plane
to avoid being hit ? [ g = 10m/s2 ]