A box is pressed into a spring, compressing the spring by 0.25 m. The spring constant is k = 250 —. The box is released at the bottom of a frictionless ramp and reached a height of y = 0.50 m as shown below.

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

measure their densities same density, same sub