Question : The point where the total mass of a body is supposed to be concentrated is known as
Option 1: dead centre
Option 2: centre of mass
Option 3: centre of gravity
Option 4: centre of motion
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Correct Answer: centre of mass
Solution : The correct option is the centre of mass.
The centre of mass of a body is the region where it is believed that all of its mass is concentrated. To evaluate an object's motion or behaviour in a gravitational field, this is the theoretical location where the object's whole mass can be thought to be concentrated. The centre of mass is also where an object will balance in a gravitational field with a constant strength.
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Question : The motion of the body moving along a circular path is an example of_____________.
Option 1: decelerated motion
Option 2: accelerated motion
Option 3: non-uniform motion
Option 4: uniform motion
Question : The motion of ______ body is an example of uniformly accelerated motion.
Option 1: resting
Option 2: decelerating
Option 3: parabolic
Option 4: freely falling
Question : Kinetic energy depends on:
Option 1: the velocity or speed of the moving body
Option 2: the mass of the moving body
Option 3: the pressure of the moving body
Option 4: both mass and velocity of the moving body
Question : Why is weightlessness experienced while orbiting the Earth in spaceships?
Option 1: Inertia
Option 2: Acceleration
Option 3: Zero gravity
Option 4: Orbital motion
Question : The centre of a cyclone is a calm area. It is called__________ of the storm.
Option 1: base
Option 2: focal point
Option 3: eye
Option 4: trigger point
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