What speed is faster than a nanosecond?

Answer 1

planck's time and before you ask there is nothing faster than planck's length

Answer 2

"Speed" is weird Word to use here.

"What time unit is shorter than a nanosecond" would have made more sense.

"Nano" is a prefix from the International Standard of Units.

There are

10 deciseconds in a second.

100 centiseconds

1,000 milliseconds

1,000,000 microseconds

1,000,000,000 nanoseconds

1,000,000,000,000 picaseconds

1,000,000,000,000,000 femtoseconds

1,000,000,000,000,000,000 attoseconds

1,000,000,000,000,000,000,000 zeptoseconds

1,000,000,000,000,000,000,000,000 yoctoseconds

See the link below for more information.

Answer 3

No speed is "faster" than a nanosecond, as a nanosecond is a unit of time, not speed. Speed is typically measured in distance covered per unit of time, such as meters per second.

Answer 4

A yoctosecond is a unit of time equal to 10-24 seconds.

Answer 5

No. Yocto is the smallest defined. Anything smaller is undefined.