8 terms

# PHY Ch 6: Motion in Two Dimensions

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projectile
an object shot through the air, such as a football, that has independent vertical and horizontal motions and, after receiving an initial thrust, travels through the air only under the force of gravity
trajectory
the path of a projectile through space
uniform circular motion
the movement of an object or particle trajectory at a constant speed around a circle with a fixed radius
centripetal acceleration
the center-seeking acceleration of an object moving in a circle at a constant speed
centripetal force
the net force exerted toward the center of the circle that causes an object to have a centripetal acceleration
Newton's 2nd Law for Rotational Motion
states that the angular acceleration of an object is directly proportional to the net torque and inversely proportional to the moment of inertia
net force
the vector sum of all the forces on an object
torque
a measure of how effectively a force causes rotation; is equal to the force times the lever arm