Understanding the Problem
* Initial velocity (u): 0 m/s (starts from rest)
* Acceleration (a): 5 m/s²
* Distance (s): 160 m
* Time (t): We need to find this.
Equation of Motion
We can use the following equation:
* s = ut + (1/2)at²
Solving for Time
1. Substitute the values:
160 = (0)(t) + (1/2)(5)(t²)
2. Simplify:
160 = (2.5)t²
3. Solve for t²:
t² = 160 / 2.5 = 64
4. Find t:
t = √64 = 8 seconds
Answer: The car takes 8 seconds to cover the first 160 meters.