Science Finals (Chapter 12)

• Projectile motion

  ➢ It is the motion of an object thrown into the air when after initial force that launches the object, air resistance is negligible and the only other force that object experiences is the force of gravity.
• Projectile motion - is a form of motion experienced by an object or particle (a projectile) that is projected in a gravitational field
• Projectile motion is a combination of vertical and horizontal motions that are completely independent from each other.
• Motion in one dimension - projectile that move horizontally
• Motion in two dimension - projectile that follow a curved path, and can be resolved by horizontal and vertical components
• Projectile is any object that remains in motion once projected upward or dropped because of its own inertia and the downward force of gravity.
• A projectile moves horizontally at a constant speed while having a constant acceleration of$9.8m/s^2$, along the vertical.
• Trajectory is the path that a projectile follows.
• If gravitational force is uniform and air resistance is negligible, it takes the shape of a parabola.
• Range – the horizontal distance from the point of release to the landing point the horizontal distance traveled by a projectile
• In the absence of air friction, the horizontal acceleration is zero.
• The horizontal velocity is constant and equal to the initial horizontal velocity.