Answer:
Explanation:
a )
In space due to weightlessness both astronaut and her oxygen tank will float .
when she throws the tank away from spacecraft , she will have a velocity in opposite direction ie towards the spacecraft . This happens due to conservation of momentum . She creates a momentum away so that she can get a momentum towards the spaceship.
So
m₁ v₁ = m₂v₂
12 x 8 = ( 87 - 12 ) x v₂
v₂ = 1.28 m /s
Time allowed = 2 x 60
= 120 s
So maximum distance upto which she can remain away from spacecraft
= 120 x 1.28
= 153 m .
b )
The Newton's law which explains the theory behind it is "third law of motion" . This law gives law of conservation of momentum .
Answer:
a) 30.20 m/s
b) 12.91 m/s
Explanation:
Mass of squirrel = 575 g = m
Drag coefficient = 0.70 = C
Density of air = 1.21 kg/m³ = ρ
frontal surface area = 0.0146 m² = A
Height the squirrel falls = 8.5 m = h
a) Drag force
This force will oppose gravity
∴ Terminal velocity is 30.20 m/s
b) Neglecting drag force we get
∴ Velocity of a 56 kg person falling that distance, assuming no drag contribution is 12.91 m/s
They are listed in order of increasing atomic numbers
We will all chaotically burn to death!
Hope this helps!!