Lab 3: Motion with uniform acceleration

Four equations relating key quantities for motion with constant acceleration

1. v= Vo + at 2. x=Xo + Vo t + 1/2 at^2 3. v^2= V^2o + 2a (x-xo) 4. x = Xo + 1/2 (Vo+v) t

kinetic friction

Once the object has started to slide

What will be examined and what objects are used?

We will examine two different situations where the acceleration of an object (glider) is constant (uniform). One is on and inclined plane and one is attached to a hanging mass

Newton's 2nd law

a body acted upon by a net force move in such a manner that the time rate of change of momentum (the product of mv) is equal to the force. If the mass of the body remains constant while the force is acting on it,

Newton's first law

a body remains at rest of in uniform motion unless acted upon by a net external force.

a:describe one-dimensional movement with constant acceleration

acceleration (a constant)

Tilted air track

frictionless, one dimensional environment armed with an ultrasonic sensor there are two sets of support screws on the underside of the tract. The distance between these are used in calculating the tilt angel of the track

Newton's 3rd law

if two bodies exert forces on each other, these forces are equal in magnitude and opposite in direction. Another way of saying this is that "for every action, there is an equal and opposite reaction." It is important to remember that the "action and "reaction" forces act on different bodies; if they didn't, nothing would ever accelerate

Xo: describe one-dimensional movement with constant acceleration

initial position

Vo:describe one-dimensional movement with constant acceleration

object velocity at Xo

v: describe one-dimensional movement with constant acceleration

objects velocity at x

x: describe one-dimensional movement with constant acceleration

position at time t

Constant acceleration

the acceleration and object experiences does not depend on the object's position or velocity; it is just a single vector with constant magnitude and direction.

Static friction

the force that the sliding object must overcome so that is can break free and start sliding - what prevents and object from starting to slide along the surface - direction is opposite and the magnitude is the same as the force that tries to make the object move

t: describe one-dimensional movement with constant acceleration

time is takes object to go from Xo to x