An object accelerates from rest at a constant rate covering a distance of 12 meters in 4 seconds. What is its rate of acceleration?

Put your answer in this form:

X. X (m/s)/s

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