A scientist observed two basketballs roll and collide with each other. One was a 2.0 kg basketball traveling at a speed of 0.60 m/s north and the other was a 4.0 kg basketball traveling south at a speed of 0.90 m/s. After the collision, the final velocity of the 4.0 kg basketball is 0.50 m/s north, find the final velocity of the 2.0 kg basketball?

Explain vector addition, triangle method and parallelogram method

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].