The answer is D, hope this helped!
Answer:
the car’s final displacement is 60 m
Explanation:
Given;
initail velocity of the car, u = 0
acceleration of the car, a = 0.8 m/s²
time of motion, t = 10 s
The first displacement of the car:

The second displacement of the car;
acceleration, a = 0.4 m/s², time of motion, t = 10 s

The final displacement of the car;
x = x₁ + x₂
x = 40 m + 20 m
x = 60 m
Therefore, the car’s final displacement is 60 m
The correct answer would be C. three half lives.
<span>A)the paper clip is repelled away from the nail because an electromagnetic field magnetized the nail</span>
'A' is Kepler's 2nd law of planetary motion. It's the one to pick.
'B' is true, but so what ? It doesn't show anything.
'C' is nonsense.
'D' is true, but the vector doesn't show anything.