Suppose you increase your walking speed from 4 m/s to 12 m/s in a period of 1 second what is your acceleration

a   = 12 ms⁻¹ - 4ms⁻¹ / 1 s

a  =    8 ms⁻²

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.