The engine in a model rocket applies an upward force of 120 N. If the rock travels straight upward for 3.2 m, how much work is done on the rocket by its gravity if its mass is 500 kg?

there are no contact forces mentioned on the list of choices that you've provided.

the right answer is 0.3 meters per second

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.