How many minutes are there in an hour?<br/>60 minutes. <br/>How many seconds are there in a minute?<br/>60 seconds <br/>How many x are there in a second?<br/><br/>1 Is there a unit of time that goes into a second?<br/>2 Is there a unit of time smaller than a second?<br/><br/>Are questions 1 and 2 grammatical? <br/><br/>Thanks