Dale (m = 75 kg) skis across a horizontal surface at a velocity of 5 m/s to the west. He drags his ski
poles, which gives him an impulse of 300 kg. m/s to the east. What is his new velocity? (1 point)

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions