Final answer:
To find the value of a variable, one must isolate it on one side of the equal sign by using algebra, ensure all units are correct, and then calculate the solution using the appropriate equations.
Step-by-step explanation:
To figure out the value of a variable, the correct approach is C) Isolate the variable on one side of the equals sign. This process involves using algebra to simplify the equation and solving for the variable in question. First, you should identify the equation to use by listing all known values and determining what needs to be solved for. Write the equation down and ensure all values are in correct units. After filling them in, calculate the answer to find the variable's value.
For example, in kinematics, you may need to find the initial velocity of a body. You can choose a suitable kinematic equation and then rearrange it to solve for the unknown quantity. Simplify the equation if necessary, and maintain consistent units throughout the process to arrive at the correct solution.