Given, m1 = 3.50 g
m2 = 5.5 g
r₁=(3i^ + 3j^)t + 2j^ t²
r₂ =3i^ - 2j^t² - 6j^t
t = 2.50 sec.
Now the position of the center of mass is,
The velocity of the center of mass = (m₁r₁+m₂r₂)/(m₁+m₂)
= {3.5[(3i^ + 3j^)t + 2j^ t²]+5.5[3i^ - 2j^t² - 6j^t]}/(3.5+5.5)
= (-2.89i^-1.39j^)cm
So the velocity of the center of mass = (-2.89i^-1.39j^)cm
What is Velocity?
Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time. Velocity is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of bodies.
What is the Center of mass?
In physics, the center of mass of distribution in space (sometimes referred to as the balance point) is the unique point where the weighted relative position of the distributed mass sums to zero. This is the point at which a force may be applied to cause a linear acceleration without an angular acceleration.
What is the velocity of a particle?
The velocity of a particle is its speed and the direction in which it's moving. It is also described as the instantaneous rate of change of the particle's distance traveled and the direction in which the distance is changing.
To learn more about velocity of particle, refer:
brainly.com/question/80295?source=archive
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Pretty sure it's C - The Earth is rotating from East to West. It's the only answer that really makes sense.
B. a prism.
This is because the term "angle of deviation" is used to describe the angle at which the light bends compared to the normal of the ray of light