The answer to this question is a the estimate the speed of light
For this case we have that by definition, the momentum is given by the following formula:
Where:
v: is the velocity
m: is the mass
According to the statement we have:
Substituting:
ANswer:
The net force is zero due to the direction.
We need to know about force resultant to solve this problem. The force resultant is the total net force applied to the object according to the direction. It can be written as
R = F1 + F2 + ... + Fn
where R is force resultant (net force)
From the question above, we know that
F1 = F2 = F N
Because the direction is the same, the force will be minus each other.
R = F1 - F2
R = F - F
R = 0 N
Hence, the net force is 0 N
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One very useful definition if energy is "the ability to do work".
Answer:
There is an entity to which we have given the name dark energy which contributes to the total density but which we cannot detect by the usual methods.