One Piece V.2 Msn Physics Question Help Please ASAP!! Hoow To Solve These Problems?!?

Physics question help please ASAP!! hoow to solve these problems?!? - one piece v.2 msn

1) A core of uranium U238 stay in one piece
Billions of years, but sooner or later --
Buttons and a particle of mass 6.64 * 10 ^ -27 kg
234 and the basic weight of 3.88 * 10 ^ -25 kg
and the decline itself is extremely fast
(it takes about 10 ^ -20 s). Let us assume that uranium
Nucleus at rest was just before the fall.
When the particles emitted at a rate of
2.12 * 10 ^ 7 m / s, which the recoil velocity
the nucleus of thorium? Response Units
m / s.
2) An object of mass m moves to the right with
Speed, V-head collision with an object
3M mass with a velocity v / 3 in
Opposite direction. If the two objects stick
Overall, is how quickly the combined
Object of mass 4m, after the collision?
1. 2 v
2. v
3. V / 2
4. V / 4
5. 0
6. 3 v
7. V / 3