Step-by-step explanation:
u = Initial velocity = 20m/s
v = Final velocity = 0m/s
a = Acceleration = -5m/s²
We wish to find s, the displacement of the car.
Using Kinematics, we have v² = u² + 2as.
Therefore (0)² = (20)² + 2(-5)s, and s = 40m.
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