A runner is running on a circular track, which is 200 m in circumference. Find the magnitude of his acceleration in m/s2 when he is running at a constant speed of 10.8 m/s.

it's a b and

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.