Answer:
80 m
Explanation:
The cars move at constant acceleration, so the motion can be modeled with kinematic equations also known as SUVAT equations. In this case, we will use the equation:
s = ut + ½ at²
where
- s is the displacement
- u is the initial velocity
- a is the acceleration
- t is the time
s = ut + ½ at²
s = (10 m/s) (4 s) + ½ (5 m/s²) (4 s)²
s = 80 m
