A block of mass 2.5 kg is sliding across a smooth level surface at 3.0 m/s when it hits a stationary spring bumper that is fixed to a wall at one end. The force constant is
360 N/m. By what amount does the block compress the spring?

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z