Assume that the small-massed particle is 
and the heavier mass particle is 
.
Now, by momentum conservation and energy conservation:
Now, there are 2 solutions but, one of them is useless to this question's main point so I excluded that point. Ask me in the comments if you want the excluded solution too.
So now, we see that 
and 
. So therefore, the smaller mass recoils out.
Hope this helps you!
Bye!
Answer:
720 J
Explanation:
The gravitational potential energy that Essam loses for every metre is given by:
where
m=72 kg is Essam's mass
is the gravitational field strength
is the difference in height
By substituting the numbers into the formula, we find
The answer is a Viscosity because it describes the internal friction of a moving liquid
The angular momentum of the person is given by:
where
is the mass of the person,
is the tangential velocity, and
is the distance of the person from the center of rotation. Using these data, we find
That could be an electromagnet,
and it could also be an solenoid.
