Answer:
Explanation:
In addition to the 'daughter' products, two or three neutrons also explode out of the fission reaction and these can then collide with other uranium nuclei which are unstable so these cause further fission reactions. This is known as a chain reaction .
Hope this helps
Answer:
34.6 m/s
Explanation:
Since there are no external forces acting on the system, the total momentum of the kids+sled system must be conserved, so we can write:
where:
is the mass of kid A
is the mass of kid B
is the mass of kid C
u = 19.8 m/s is the initial velocity of the system
v is the final velocity of the system, after kid A jumped off it
Here we have ignored the mass of the sled since it is not given.
Therefore, by solving the equation for v, we find the new velocity of the sled:
Freefall
Freefall is the situation of having zero weight of a body with a certain mass and acquired when a body is in free fall or there is no gravity.
Weightlessness
The weightlessness of a body in the state in which the body experiences that the body is not being attracted by any force.