Answer: u=(mv-ft)/m
Step-by-step explanation: f=m(v-u)/t
Multiply both sides of the equation by t
f×t = m(v-u)/t ×t
Simplifying, ft = m(v-u)
Expanding the brackets,
ft = mv-mu
By transfer of terms,
mv - ft = mu
Dividing both sides by m,
(mv-ft)/m = u
Hence, u= (mv-ft)/m
