A bird holds a fruit in its beak and flies parallel to the ground. It lets go of the fruit at some height. Describe the trajectory of the fruit as it falls to the ground as seen by the bird.

A bird holds a fruit in its beak and flies parallel to the ground. It lets go of the fruit at some height. Describe the trajectory of the fruit as it falls to the ground as seen by a person on the ground.

A brid holds a walnut between its bills taken it high above ground . While flying parallel to the ground it lets the nut go off. (a) What is the trajectiroy of the nut with respect to the bird and . (b) as seen by an obderver on the ground ?

A bird was flying in a line parallel to the ground from north to south at a height of 2000 metres. Tom, standing in the middle of the field, first he observed the bird in the north at an angle of 30^@ . After 3 min, he again observed in the south at an angle of 45^@ . find the speed of the bird in km per hour. (sqrt(3) = 1.73)

A supersonic jet plane moves parallel to the ground at speed v= 0.75 mach (1 mach = speed of sound). The frequency of its engine sound is v_0= 2kHz and the height of the jat plane is h= 1.5 km. At some instant an observer on the ground hears a sound of frequency v= 2v_0 . Find the instant prior to the instant of hearing when the sound wave received by the observer was emitted by the jet plane. Velocity of sound wave in the condition of observer =340 m"/"s .

A bird is sitting on the top of a tree 80 m high. From a point on the ground the angle of elevation of the bird is 45^(@) . The bird flies horizontally such that it remains at a constant height from the ground. After 2 seconds the angle of elevation of the bird from the same point is 30^(@) . Find the speed of the flying bird.