PHYSICS 2ND QUARTER

range

the total horizontal distance of a projectile travel from its starting point to the point where it lands at the same height it was launched from

free fall

the motion of an object under the force of gravity only

trajectory

the parabolic path followed by a projectile in the air

time of flight

time from when the object is projected to the time it reaches the surface

projectile

object launched into space without motive power of its own

horizontal projection

motion can be best described by considering its horizontal and vertical motion separately

circular motion

movement of an object along the circumference of circle or rotation along a circular path

radius

distance from the center of tyhe circle to the object

frequency

the number of revolutions per unit time

period

the time it takes for one complete revolution

tangential velocity

rhe instantaneous linear velocity of an object in cicular motion, acting tangent to the circular path

centripetal acceleration

the acceleration that causes an object to change its direction and stay in its circular path

uniform circular motion

the motion of an object traveling at constant speed in a circular path

centripetal force

force that causes an object to follow a curved path always pointing towards the center of the circle

inertia

an objects resistance to a change in its motion

acceleration

a measurement of how quickly an object is changing speed