An object follows a curved path. Which of the following quantities may remain constant during the motion?
A
Speed
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B
Velocity
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C
Acceleration
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D
Magnitude of acceleration
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Solution
The correct options are A Speed C Acceleration D Magnitude of acceleration Speed can remain constant eg. uniform circular motion. acceleration can remain constant eg. projectile. In projectile acceleration is always acceleration due to gravity (g). but when a particle is in a curved path, direction of motion is continuously changing. Hence velocity also keep changing. So the correct options are 'A' 'C' and 'D'.