Students were investigating thermal energy. They put a metal spoon in the freezer. They put hot water in a beaker and measured the water temperature. They removed the spoon from the freezer and put it in the beaker. After 10 minutes, the students measured the water temperature again and touched the spoon. The data are shown in the table. Student Investigation Start of Investigation After 10 Minutes Water temperature (°C) Feel of spoon Water temperature (°C) Feel of spoon 43 Cold 41 Warm Which best describes how the thermal energy in the water and in the spoon changed during the investigation?

16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.