4.9.2.1 to the power of - pow( base, exponent )

The pow function - pow stands for power - returns a base number raised to an exponent. If the base argument is 2 and the exponent argument is 2 the function returns 4.

sphere.YPosition = pow( time, 0.5 );

This will raise the value of time to 0.5:

If you increase the exponent to 1 the function will return the value of time:

sphere.YPosition = pow( time, 1 );

If you increase the exponent to 2 the function will square the value of time:

sphere.YPosition = pow( time, 2 );