Soccer ball is heading east (positive direction) with momentum 2kgm/s. it is kicked and a fraction of a second later is moving west (negative direction) with momentum of -4.2. what impulse did kicker put on ball in kgm/s?

What is the most useful equation for electric power?

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature