circular motion

remains constant

In circular motion, the velocity changes and the speed …

perpendicular

In circular motion, acceleration and velocity are …

both tangential and radical acceleration

when a body moves along a circular path with variable speed, what does it have?

circular projectile

When a force of constant magnitude acts on a particle and is always perpendicular to the particle’s motion, the motion is…

w^2r

if a particle is moving in a uniform circular motion, the radial acceleration is given by-

centripetal force

what kind of force would we apply to cause something to move in a circular path?

2 forces act on the rock and the resultant is zero

when a rock is attached to a string and made to swing in a vertical circle what will happen when the rock reaches the highest point?

angular displacement

shortest distance between two points, with a change in angle

circular motion

when an object moves in a circle

one radian

When an object is in a circular motion the arc length is equal to the radius of the circular, then the angular displacement 0 is one radian, r=s

angular speed

rate of change of angular displacement

rotation

when something spins around on an axis

revolution

when an object turns/revolves around another

angular acceleration

rate of change of angular velocity

centripetal acceleration

An object traveling in a circle, even though it moves with a constant speed, will accelerate

level curves

friction is the force that produces centripetal acceleration

banked curves

a component of normal force adds to the frictional force to allow higher speeds

horizontal circle

the horizontal component of the tension causes the centripetal acceleration

Newton’s Law of Universal Gravitation

Every particle in the universe attracts every other particle with a force that is directly proportional to the product of the masses and inversely proportional to the square of the distance between them

escape speed

the speed needed for an object to soar off into space and not return

kepler’s first law

all planets move in elliptical orbits with the cun at one focus

kepler’s second law

a line drawn from the Sun to any planet will sweep out equal areas at equal times

kepler’s third law

the square of the orbital period of any planet is proportional to cube of the average distance from the sun to the planet