3. Ball A and ball B roll, in the same direction, with the following masses and initial speeds: mA = 5 kg, mB = 10 kg, vA = 4 m/s and vB = 2 m/s. After ball A collides with ball B it moves in the opposite direction with a speed of vA = 1 m/s. Determine the direction and speed of ball B after the collision.

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?

The path of a satellite orbiting the earth causes it to pass directly over two tracking stations a and b, which are 51 miles apart. when the satellite is on one side of the two stations, the angles of elevation at a and b are measured to be 87 degrees and 84 degrees, respectively. (a) how far is the satellite from station a? (b) how high is the satellite above the ground?

A36,287 kg truck has a momentum of 907,175 kg • . what is the truck’s velocity