1. Two challenges are being solved: (a) The docking manoeuvre of the two spacecraft is calculated;

b) The period of orbiting the Earth is calculated.

In what case can spaceships be considered as material points?

1) Only in the first case.

2) Only in the second case.

3) In both cases.

4) Neither in the first nor in the second case​

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.

Find the mass by adding the numbers from the three sliders