Projectile Motion
The definition of a projectile is an object with the only force acting on it is gravity.
In projectile motion there are two directions. The X-Direction and the Y-Direction.
In the x-direction, the horizontal acceleration is always zero because the object is in free-fall. In the y-direction the object in free-fall will always have an acceleration in the vertical direction of negative g (-g), with g being the constant for gravity (-9.81 m/s^2).
Equations in the x-direction:
The definition of a projectile is an object with the only force acting on it is gravity.
In projectile motion there are two directions. The X-Direction and the Y-Direction.
In the x-direction, the horizontal acceleration is always zero because the object is in free-fall. In the y-direction the object in free-fall will always have an acceleration in the vertical direction of negative g (-g), with g being the constant for gravity (-9.81 m/s^2).
Equations in the x-direction:
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Equations in the y-direction:
Uniform Circular Motion
Variables included in circular motion measurements include....
- axis of rotation
- radius
- center of circle
- centripetal acceleration + centripetal force
- tangential velocity
- angular velocity
- mass (for inertia)
Understanding tangential speed...
Tangential speed can be referred to as the speed of an object moving in circular motion. It is the instantaneous speed along the tangent line (perpendicular to the radius.
Uniform circular motion occurs when the tangential speed is constant.
Centripetal acceleration always points in the direction of the center of the circle. It is what creates the circular motion.
Universal Gravitation
Variables within universal gravitation...
- Force of gravity (Fg)
- Universal gravitational constant (G) = 6.67 * 10-11 (N * m2)/(kg2)
- m1 = mass of first object (kg)
- m2 = mass of the second object (kg)
- r = Distance between the centers of the two objects
The force of gravity between objects is dependent on the masses of the objects and the distance between them
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