If s=ut + 1/2 at^2 , a) make a the subject of the expression b) make u the subject of the expression c) if s=10, t=2 and u=4 find the value of a

a) s=ut + 1/2 at²Firstly , take the ut to the left hand side of the equation in order to isolate the 1/2 at².s-ut=1/2 at² Then multiply both sides by 2 to leave just at² on the right hand side.2s-2ut=at²Finally divide both sides by t² to leave just a on the right hand side.a=(2s-2ut)/t²
b) Firstly, minus 1/2 at² from both sides to leave just ut on the right hand side.s-1/2 at²=utThen divide both sides by t in order to get only u on the right hand side.(s-1/2 at²)/t =uThis can also be written as u=s/t - 1/2 at
c) Use the equation a= (2s-2ut)/t²Substitute in valuesa=(2(10)-2(4)(2))/(2)²a=(20-16)/4a=4/4a=1