Two birds collide in midair. Before the collision, their combined momentum was 88 kg. m/s to the west. What is their combined momentum after the
collision?
A. 88 kg. m/s north
B. 88 kg. m/s west
C. 88 kg. m/s east
D. 88 kg. m/s down

Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?

Observations show that interstellar clouds can have almost any shape and

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.