A stone tied to the end of a string of length 2.0 m is whirled in a circle at constant speed v. What is the speed if it speed is moves through an angle of 1.57 radians in a time of 0.40 seconds?

the given statement is true.

sensory memory lasts for a fraction of seconds before the information is lost. it is the shortest -term memory and can be called as an element of memory. example: when we look at something and remember what it looks like, is just a second of observation. it degrades very quickly. it can also be considered as the process of perception rather than considering it as a memory.

yeah the answer is mean