speed = distance/ time
Sally's speed = 200m / 39 s = 5.13 ms^-1
Transfer of energy to another
Answer:
From Red Giant to Supernova: The Evolutionary Path ofHigh Mass Stars. Oncestars that are 5 times or moremassive than our Sun reach the red giant phase, their core temperature increases as carbon atoms are formed from the fusion of helium atoms. ... When the core contains essentially just iron, fusion in the core ceases.
