The body moves uniformly along the X-axis opposite to its positive direction. The speed module is 36 km / h.

The body moves uniformly along the X-axis opposite to its positive direction. The speed module is 36 km / h. The starting coordinate is 20m. Find your body position after 4s. What is the distance traveled by the body?

Initial data: uniform movement; the body moves in the opposite direction from the reference point; V (modulus of speed) = 36 km / h (in SI V = 10 m / s); x0 (start coordinate) = 20 m; t (elapsed time) = 4 s.

1) Determine the position of the body in question after 4 s: x = x0 – V * t = 20 – 10 * 4 = -20 m.

2) Calculate the path covered by the body: S = V * t = 10 * 4 = 40 m.

Answer: The final coordinate is -20 m; the distance covered is 40 m.