Answer:
u as the subject of the given formula is, 
Step-by-step explanation:
Given;
v² = u²+2as
To make u the subject of the formula, the following steps are taken;
v² = u²+2as
v² - 2as = u²
take the square - root of both sides of the equation;

Thus, u as the subject of the given formula is, 
Answer:
200
Step-by-step explanation:
160/80 is 2. 2 times 100 is 200