Which of the following is not a projectile? (1) An aircraft taking off (2) A ball is thrown horizontally from a roof (3) A bullet fired from a rifle (4) A football kicked by a player​.

Answer: (1) An aircraft taking off

projectile motion

Any object thrown into space with only gravity acting on it is referred to as a projectile. Gravity is the main force acting on a projectile. When a particle is thrown obliquely near the earth’s surface, it follows a curved path of constant acceleration that leads to the earth’s centre. The path of such a particle is called a projectile and the motion is called projectile motion. When an aircraft takes off, it does not take off in a parabolic direction. As a result, it isn’t a projectile motion.

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