Answer:
D) momentum of cannon + momentum of projectile= 0
Explanation:
The law of conservation of momentum states that the total momentum of an isolated system is constant.
In this case, the system cannon+projectile can be considered as isolated, because no external forces act on it (in fact, the surface is frictionless, so there is no friction acting on the cannon). Therefore, the total momentum of the two objects (cannon+projectile) must be equal before and after the firing:
But the initial momentum is zero, because at the beginning both the cannon and the projectile are at rest:
So the final momentum, which is sum of the momentum of the cannon and of the projectile, must also be zero:
depending on Genetics the father genes depend on everything because they give most of the heredity and genetics to the child more than the mother does
Answer:
metals,nonmetals, and inert gases
Explanation:
Answer:
the correct answer is A, North
Explanation:
The forces are vectors so they must be added vectorially.
The magnitude of the forces is the same, but not their direction, which is why they are different.
Analyze the situation presented
We have a force towards the North and another towards the South with the same magnitude, therefore these cancel each other out
We have a force towards the Northeast and another towards the Northwest, these can be decomposed into parts, one towards the North and another on the East-West axis, this last component is canceled, but the component towards the North is added.
In summary we see that the body accelerates towards the North
the correct answer is A
Answer:
The angle from the vertical is 48.72°
Explanation:
Given :
Length of rope 
m
Mass of man 
Kg
Mass of car 
Kg
Velocity of car 
According to conservation law,
Potential energy of man is converted to kinetic energy of car moving,
We calculate height,
( ∵ 
)
m
This is the distance of the rope at the bottom,
So we take difference of it.
⇒ 
We can calculate angle between them,
48.72°
Therefore, the angle from the vertical is 48.72°
