p6 2.3

x1 Formula

V = Vo + at

x2 formula

x = xo +Vot + ½at²

x3 formula

V² = Vo² + 2a(x-xo)

x4 formula

x-xo = (Vo + V)½t

Constant acceleration

The change in velocity per unit time is constant

Not accelerating

An object with constant velocity is

Free fall

Motion of an object under influence of gravity only ignoring a resistance

Aristotle

Heavy objects fall faster than light ones

Galileo

All objects fall at the same right regardless of mass if air resistance is absent

9.8m/s²

Earth’s acceleration

1.6m/s²

Moon’s acceleration

270m/s²

Sun’s acceleration

y1 formula

V = Vo + (-g)t

y2 formula

y = yo + Vot + ½(-g)t²

y3 formula

V² = Vo² + 2(-g)(y-yo)

y4 formula

y-yo = ½ (Vo + V)t

0 m/s

If a ball is thrown upward at the highest point, velocity is

decreases

If a ball is thrown upward velocity _ as it goes up

increases

If a ball strong upward and goes back on the way down the velocity