A3.0-kg object moves to the right at 4.0 m/s. it collides head-on with a 6.0-kg object moving to the left at 2.0 m/s.

which statement is correct?
a) the total momentum both before and after the collision is zero.
b) the total momentum both before and after the collision is 24 kg·m/s.
c) the total momentum before the collision is 24 kg·m/s, and after the collision is 0 kg·m/s.
d) none of the above is true.

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Acar moves at 12m/s and coasts up a hill with a uniform acceleration of -1.6m/s2. how far has it traveled after 6.0s?

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?