Question : Which one of the following attributes is not true for uniform circular motion?
Option 1: The speed of the body remains constant
Option 2: Velocity is always perpendicular to the radius of the circle
Option 3: The velocity of the body is continuously changing
Option 4: The distance is always equal to the displacement
Correct Answer: The distance is always equal to the displacement
Solution : The correct answer is The distance is always equal to the displacement.
Uniform circular motion is when an object moves at a constant speed along a circular path. While speed remains constant, velocity being a vector, changes direction continuously, always perpendicular to the circle's radius. And the distance is not always equal to the displacement in the uniform circular motion. Distance is the total length covered regardless of direction, while displacement is the shortest path between initial and final positions.
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Question : The motion of a body around a circular path is an example of
Option 1: Uniform velocity, variable acceleration
Option 2: Uniform speed, uniform velocity
Option 3: Uniform speed, variable velocity
Option 4: Uniform speed, variable acceleration
Question : During the motion of a projectile fired from the Earth's surface, ___________.
Option 1: its kinetic energy remains constant
Option 2: its momentum remains constant
Option 3: vertical component of its velocity remains constant
Option 4: the horizontal component of its velocity remains constant
Question : The motion of an object is ______ if its velocity is constant.
Option 1: only accelerating
Option 2: only decelerating
Option 3: non-uniform
Option 4: uniform
Question : What would you call the area under the curve of a velocity-time graph included between itself and two-time ordinates?
Option 1: Velocity
Option 2: Displacement
Option 3: Acceleration
Option 4: Speed
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