A bIRd holds a walnut between its beak 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 ?

Two parallel rail tracks run north-south Train A moves north with a speed of 54 km h^(-1) and train B moves south with a speed of 90 km h^(-1) . What is the a. relative velocity of B with respect to A ? b. relative of a monkey running on the roof of the train A against its motion (with its velocity of 18 km h^(1) with respect to the train A ) as observed by a man standing on the ground?

Two parallel rail tracks run north-south Train A moves north with a speed of 54 km h^(-1) and train B moves south with a speed of 90 km h^(-1) . What is the a. relative velocity of B with respect to A ? b. relative velocity of a monkey running on the roof of the train A against its motion (with its velocity of 18 km h^(1) with respect to the train A ) as observed by a man standing on the ground?

A bird is sitting on the top of a vertical pole 20 m high and its elevation from a point O on the ground is 45o . It flies off horizontally straight away from the point O. After one second, the elevation of the bird from O is reduced to 30o . Then the speed (in m/s) of the bird is (1) 40(sqrt(2)-1) (2) 40(sqrt(3)-2) (3) 20""sqrt(2) (4) 20(sqrt(3)-1)

An aeroplane pilot wishes to fly due west A wind of 100 km h^-1 is blowing towards south. (a) If the speed of the plane (its speed in still air) is 300 km h^-1 in which direction should the pilot head ? (b) What is the speed of the plane with respect tom ground ? Illustrate with a vector diagram.

A 20 kg monkey has a firm hold on a light rope that passes over a frictionless pulley and is attached to a 20 kg bunch of bananas. The monkey looks upwards , sees the bananas and starts to climb the rope to get them. (a) As the monkey climbs ,do the bananas move up , move down or remain at rest? (b) As the monkey climbs ,does the distance between the monkey and the banana decrease, increase or remain same? (c) The monkey releases her hold on the rope .What happens to the distance between the monkey and the bananas while she is falling ? (d) Before reaching the ground , the monkey grabs the rope to stop her fall. What will happen to bananas ?

A stone is projected from the ground in such a direction so as to hit a bird on the top of a telegraph post of height h and attains the maximum height of 2h above the ground. If at the insatant of projection, the bird were to fly away horizontally with a uniform speed, find the ratio between the horizontal velocity of bird and the horizontal component of velocity of stone, if the stone hits the bird while descending.

A car falls off a ledge and drops to the ground in 0.5 s . let g=10 m//s^(2) (for simplifyng the calculation). (i) what is its speed on striking the ground ? what is its average speed during 0.5s? (iii) How high is the ledge from the ground ?