If we had 263 ml of mercury (volume) the density of the mercury is 13.55
g/cm”
Mass = Density x Volume (use image attached as guide)
Mass = 263 x 13.55 = 3563.65
Your mass should be 3563.65
They determine the north and south ends
Gravity is pulling her towards the ground but also forward as the child is on a slope. Friction is pulling against the child as the slide pulls against her.
They took different paths to discover energy, but both found that energy can be exerted, and conserved