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

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?