time = 2 seconds represents 2 seconds since the stopwatch began. how would we represent 2 seconds before we…
time = 2 seconds represents 2 seconds since the stopwatch began. how would we represent 2 seconds before we started our stopwatch, when the rocket was still underwater?
Answer
Explanation:
Step1: Define time reference
The start - time of stopwatch is taken as the zero - point.
Step2: Represent negative time
Time before start is negative. So 2 seconds before start is represented as $- 2$ seconds.
Answer:
$-2$ seconds