What types of change occur when water changes from a solid to a liquid?

What is the momentum of a 2 kg object moving at 15 meters per second

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20