The following examples are examples of a body under uniform motion, except; 1 pointa charged particle in a uniform electric fielda dropped object in the absence of air resistancean object on which a constant net force actsa car accelerating at a varying rate along a straight freeway
Question
The following examples are examples of a body under uniform motion, except; 1 pointa charged particle in a uniform electric fielda dropped object in the absence of air resistancean object on which a constant net force actsa car accelerating at a varying rate along a straight freeway
Solution
The example that does not represent a body under uniform motion is "a car accelerating at a varying rate along a straight freeway".
Here's why:
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A charged particle in a uniform electric field: This is an example of uniform motion because the electric field exerts a constant force on the charged particle, causing it to move at a constant speed in a straight line.
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A dropped object in the absence of air resistance: This is also an example of uniform motion. In the absence of air resistance, the only force acting on the object is gravity, which is constant. This causes the object to accelerate at a constant rate, which is a type of uniform motion.
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An object on which a constant net force acts: This is another example of uniform motion. A constant net force will cause an object to move in a straight line at a constant speed.
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A car accelerating at a varying rate along a straight freeway: This is not an example of uniform motion. If a car is accelerating at a varying rate, its speed is not constant. Therefore, its motion is not uniform.
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