Separate the barriers so they have a 2cm gap between them.
Answer:
A
Explanation:
Please see the attached picture for the full solution.
Since we are only concerned about the decrease in gravitational potential energy of the car, we look at the decrease in height of the car as it moves from point X to point Y, instead of the distance travelled by the car.
<span>adopt ecological conservation practices </span>
2.14x 1022 kg
the 22 is a xponet of ten
F=mass x acceleration = ma= 0.8*20 = 16N