Question

Find u in terms of m,g and v in this equation E = m/2g(v²-u²)
​

Answer 1

Explanation:

E = m/2g(v²-u²)

2g×E = 2g×m/2g(v²-u²)

2Eg = m(v²-u²)

2Eg = mv² - mu²

mu²= mv² -2Eg

mu²/m = mv² -2Eg /m

u²= v² -2Eg

u = √v²-√2Eg