Can someone

because kevin is so strong, he can move a crate in 10 seconds. how much power, in watts, does he use?

Power=Work/Time
Work=Force x Displacement 

So all in all

Power= Force x (Displacement/Time) where (Displacement/Time) is velocity so you can also say
Power= Force x Velocity

Here, i'm sure this will help

Ansa leaf changing color in autumn;

3-isopentane; 3-methylbutane, and 1,2-methylpropane do not meet iupac rules, so they are wrong names.the only valid name onthe list is 2-methylbutane, which is the same isopentane.this is its formula:                   ch2                    |ch3 - ch - ch2 - ch3answer: 2-methylbutane