Answer:
A. person in roller coaster
Explanation:
She observes solubility - the ability of the substance to dissolve in e.g. the liquid.
857.5Kjoules
Using K. E=1/2 Mv^2
=1/2x1400x35x35
=857500joules
=857.5KJ
distance from the Sun of 2.77 astronomical units or about 414 million km 257 million miles and orbiting period of 4.62 years
