Projectile Motion
*Object, lamentable in gravitational field, with gravity only pressure acting on it - moves in a parabolic shape
* metrical in two independent dimensions
oVertical - gravity effects
oHorizontal - remains continual though-out motion
*Galileo - formulas for projectile motion
oS = UT - Horizontal motion
oS = UT + ½ AT2 - Vertical motion
Galileo depth psychology of Projectile motion
*Trajectory of projectile makes a parabolic shape
*light-emitting diode him to consider reference close ins
*Opponent believed in estimation of geocentrism - jewel would be left behind if Heliocentric
*Galileo explained - didnt fall away because divided the nations motion
oTower and stone shared the resembling horizontal hurrying
oExperiment - dropped object from crows live of ship - dropped down to base of tower whether stationary or moving at a constant velocity
*This led to Galilean relativity
oThe laws of mechanics are the same in a frame of reference that is at rest or one that is moving at a constant velocity
Escape Velocity
*The necessary velocity take to leave the earths surface
*Depends on gravitational acceleration of planet - consequently mass and diameter of planet
*~11.
2 km/sec on earth - not taking into account atmospheric friction
*Lower hitch around velocity - least likely planet has atmosphere
Newton and Escape Velocity
*Proposed the idea of artificial satellites
*Projectile launched horizontally from mountain -
oAs launch velocity increased, object would go further till crashing or till it follows ellipse of earth - orbit
Circular motion
*Motion of an object in visor path, with constant speed - uniform circular motion
*Speed same - however changing velocity and accelerating - direction eer changing
* interchange in velocity - directed towards centre of circle; inward-moving force
*Uniform circular motion - centripetal force is always towards centre of circle
*Ac = MV2/R
*Orbit is acquired by lifting a...
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