Answer: V-final= {F*{d/v¹}} /{m1 + m2}
Explanation: From Newton's second law we know that impulse that is force multiplied by time is equal to change in momentum.
Therefore the momentum before collision would be
F*t
But time t = distance (d)/velocity(V1)
t = d/V1
Momentum before collision
=F * {d/v1}.
Also, from the question we were told after collision the two balls stuck together. That statement means that they move with a common ( same) velocity after collision.
Therefore,
Momentum after collision
= {m1+m2}*V-final
From the law of conservation of momentum which state that the sum of momentum before collision is EQUAL to the momentum after collision. We have that,
F*{d/v1} = {m1+m2}*V-final
Making V- final subject of the formula we have that,
V-final = {F*{d/v1}} / {m1+m2}
NOTE: The momentum of a body is the product of it's mass and velocity. That is M* V.
The refractive index of a medium is independent of (not related to) the angles of incidence or refraction. It's just a property of the medium. <em>(D)</em>
I agree with you the answer is A
Answer:
11.48 degree N of W
Explanation:
We are given that
Wind velocity=km/h
Because wind is blowing towards south
Air speed=
Because the captain want to move with air speed in west direction.
x component of relative velocity=-212 km/h
y-Component of relative velocity=-43km/h
Direction=
N of W
Hence, the direction in which the pilot should set her course to travel due west=11.48 degree N of W
Answer:
"jumps" from one energy level down to another lower energy level.
Explanation:
The light observed in such a spectrum is emitted when an electron in an atom "jumps" from one energy level down to another lower energy level. When an electron does this , it emits energy equal to difference in the energy level of two shell in which the electron jumps.
And this emitted light is separated out into individual colors using a prism or diffraction grating and a few lines of colored light are seen.