Answer:
Explanation:
Given
mass of squirrel
Surface area of squirrel
and the area which face
height of tree
Coefficient of drag
drag Force
Terminal velocity is given
(b)Mass of person
Answer:
HIV attacks a specific type of immune system cell in the body. It's known as the CD4 helper cell or T cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections.
Explanation:
Are
you familiar with that?
Answer:
D) quadruple.
Explanation:
Assuming the same constant acceleration a in both cases, as we have as givens the acceleration a, the distance d, and the initial velocity v, we can use the following kinematic equations in order to compare the distances:
vf² - v₀² = 2*a*d
As the final state of the car is at rest, the final velocity vf, is 0.
⇒ - v₀² = 2*(-a)*d ⇒ d =v₀² / 2*a
1) initial velocity v₀
d₁ = v₀² / 2 a
2 ) initial velocity 2*v₀
⇒ d₂ = (2*v₀)² / 2*a = 4*v₀² / 2*a ⇒ d₂ = 4* (v₀² / 2*a)
⇒ d₂ = 4* d₁
As the equation shows, the distance required to stop, if the initial velocity were doubled, the distance required to stop would quadruple.