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Which of the following is not true about projectile motion?(a) It is an example of motion in a plane(b) It is an example of motion along a curve(c) It is not an example of motion in space(d) The acceleration keeps changing in projectile motionI have been asked this question during an internship interview.My question is based upon Motion in a Plane topic in portion Motion in a Plane of Physics – Class 11

Answer»

The correct ANSWER is (a) It is an example of motion in a plane

For explanation: The only ACCELERATION in projectile motion is the acceleration due to gravity. If the MAXIMUM height of the projectile motion is not LARGE, and can be neglected with respect to the radius of earth (which usually is the case), the acceleration due to gravity remains constant. Hence, the acceleration in projectile motion remains constant.



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