The mass of the astronaut is still 65 kilograms. Mass is constant or doesn't change no matter where you are.
here in the given situation if monkey starts free fall at the same instant when veterinarian shoots towards it then we know that vertical component of motion of monkey and the dart will be same as under gravity
so here the dart will always hit the monkey because they both moves under same acceleration
so here for the angle we can use

now we have
H = 3 m
L = 87.5 m
now we will have



so angle will be 1.96 degree above the ground
Answer:
A:7.2
B:14.25
C:1.45
D:10.3
E:2.9
F:20.88
Explanation:
Let
be the velocity and
be the angle between the velocity and ground.
Question A:
Horizontal component of velocity is given by
.
So,horizontal component is 
Question B:
Vertical component of velocity is given by
.
So,vertical component is 
Question C:
Time required is given by 
Question D:
Maximum height is given by 
Question E:
Time of flight is twice the time required to reach maximum height=
.
Question F:
The distance between the player and ball after landing is called range and is given by 

Answer:
P_2 = 1.62 atm
Explanation:
We know the formula for the rms speed of the ideal gas is given by

P= pressure of the surrounding
V= volume of the vessel
m= mass of the gas
Now, From this formula rms speed (v_rms) is directly proportional to square root is pressure.
Then

given that v_rsm,1= v0
and v_rsm,2=0.9v0
putting these values we get

P_2 = 1.62 atm
Answer:
11.479 kilometres per litre
Explanation:
for an approximate result, divide the fuel economy value by 2.352