Honors Physics 9: Freefall Study Guide

Gravity acts on every object with the same acceleration, regardless of mass.

g=9.8m/s²

a=-g

a=-9.8m/s²

Ignoring air resistance, acceleration will always equal -9.8 meters per second squared.

Dropped object means that the initial velocity of the object as it’s about to be dropped is always 0m/s

Acceleration is downward, velocity gets higher as speed decreases as the objects is going upwards. As it passes zero it speeds up as the velocity turns negative.

Acceleration is constant (ignoring air resistance) when you drop a ball.

Acceleration is the same on every object, regardless of mass.

2x time=4x distance

1x time=4x speed

What is Earth’s “g”?

Earth’s “g'“ is surface elevation.

When there is no acceleration, velocity does not change.