Answer:
it's B I think I did this the other day tbh sorry if it's wrong btw hope this helps
(a) The momentum of a moving object is given by:
where m is the mass of the object and v is its speed. In this problem, the mass of the elephant is 
and its speed is 
, therefore its momentum is
(b) We can use the same formula to calculate the momentum of the tranquilizer dart, whose mass is 
and whose speed is 
:
we see that the elephant's momentum is much larger than the momentum of the dart.
(c) Again, using the same formula, the mass of the hunter is 
, his speed is 
, therefore his momentum is
Answer:
The velocity of the light will be 1.0c only
Explanation:
The velocity of the light measured in the case given in question will be 1.0c only.
This is due to the fact that the velocity of light is never relative. The velocity of the light is maximum
The velocity of the light cannot be scaled down in no case
Thus, the velocity of the light remains as constant.
Hence, the velocity of the light measured will be 1.0c although the ships have relative velocity.
The moment of inertia about the axis will be given by the formula;
I0=(1/3)mh², where m is the mass of a section and h is the distance to outer edge.
Therefore, with four sections combined the inertia will be;
4×I0 = (4/3)mh²
But Tor(M)que applied to the door is
Torque = F × h
Therefore,
M = I0 × x
x = M/I0 (But M =Fh
= (Fh)/(4/3 × mh² ( simplifying the equation)
= 3F/4mh
but F = 80 N, m= 86 kg and i assume the height is 1.2 m
Therefore;
= (3×80)/(4×86×1.2)
= 0.581 rad/s²
