You are looking at yourself in a plane mirror, a distance of 3 meters from the mirror. your brain interprets what you are seeing in the mirror as being a person standing 6 meters from you.
<h3>Calculation</h3>
The plane mirror shows an exact replica of the real world. that means the distance of you from the mirror is the same distance as your reflection form the mirror at the opposite side of the mirror.
Thus, distance of image from the plane mirror is same as the distance of object (person) from the plane mirror but the image is formed behind the mirror.
Thereby we have v=u=3 m
Thus, distance between image and the person
is d = v + u = 3 + 3 = 6 m
Thus, the person is 6 meters away from the image.
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The mass of the ball is 1.55 kg and its change in momentum is 10 kgm/s.
<h3>What is momentum of a body?</h3>
The momentum of a body is the product of the mass and velocity of the body.
- Momentum = mass * velocity
Mass of the ball = momentum/velocity
Mass of the ball = 3.29 / 2.11 = 1.55 kg
The change in momentum of the body or Impulse = force * time
Change in momentum of the body = 5.00 * 2.00 = 10 kgm/s
Therefore, the momentum of a body depends on its mass and velocity.
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Force in Newtons =
(1200)•(the rate of acceleration you want)
It depends on how fast you want to accelerate.
