A child traveling 7 m/s on a sled passes her younger brother. If her average acceleration on the sledding hill is 2 m/s2, how fast is she traveling when she passes her older brother 5 s later?

i think the answer would be b

magnets not strong enough

explanation:

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.

the answer you are looking for is d. there are no holes for blood to enter or leave the system. your welcome