What is a projectile ? Give two examples.
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An object projected or launched with an initial velocity to move freely under the action of gravity in a vertical plane is called a projectile.
(1) A stone thrown towards a hanging fruit.
(2) A basketball lobbed towards the basket.
(3) A football kicked by a player.
(4) A bullet or shell fired from a gun.
(5) A relief packet or bomb released from an aircraft in flight.
[ In what follows, air resistance and the buoyancy of air will be ignored throughout the discussion.]
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