For an object in projectile motion, its path is a parabolic arc due to the combination of horizontal and vertical motion. The horizontal component remains constant and the vertical component is influenced by gravity, causing the object to follow a curved trajectory. Key parameters include the initial velocity, launch angle, and gravitational force acting on the object.
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An object is in projectile motion if it is only under the influence of gravity and air resistance is negligible. The object follows a curved path called a projectile trajectory. The motion can be broken down into horizontal and vertical components.
Gravity
Both projectile motion and circular motion involve the motion of an object in a curved path. In projectile motion, the object follows a curved path due to the influence of gravity, while in circular motion, the object moves in a circle with a constant radius. Both involve centripetal acceleration that changes the direction of the object's velocity without changing its speed.
Two-dimensional motion that is not always projectile motion would be circular motion, where an object moves in a circular path. Two-dimensional motion that is not projectile motion and does not accelerate the object could be uniform circular motion, where the speed is constant but the direction changes.
Gravity