Answer:
The apparent fit of the eastern coastline of South America and western coastline of Africa
Similarities of plants and animal fossils in South America and some parts of African continent which were separated by a vast ocean
Similarities in the sequence of rock layers of opposite sides of the Atlantic Ocean
Answer:
Left side and center of the periodic table: metals
Right side of the periodic table: Nonmetals
Zigzag line toward right side of the periodic table: Metalloids
Explanation:
Force is ALWAYS measured in Newtons (N)
Answer:
accleraion normal ski 0.0735 m/s², new ski 0.219 m/s²
Explanation:
This exercise should work with the one-dimensional kinetic equations, specifically with the equation
x = v₀ t + ½ a t²
When the skier is at the exit they are at rest, so their initial speed is zero
(v₀ = 0)
x = ½ a t²
Let's calculate the acceleration for normal skiing
a₁ = 2 x / t²
a₁ = 2 175/69²
a₁ = 0.0735 m/s²
a₁ = 7.35 10⁻² m/s²
Let's calculate the acceleration with the new plastic ski
a₂ = 2 x / t₂²
a₂ = 2 175/40²
a₂ = 0.219 m/s²
a₂= 2.19 10⁻¹ m/s²
More empty space in mass !!