A car moves from X to Y with a uniform speed v(u) and returns to Y with a uniform speed

A car moves from X to Y with a uniform speed v(u) and returns to Y with a uniform speed v(d). The average speed for this round trip is

Options

(a) √v(u)v(d)
(b) v(d)v(u)/v(d)+v(u)
(c) v(u)+v(d)/2
(d) 2v(d)v(u)/v(d)+v(u)

Correct Answer:

2v(d)v(u)/v(d)+v(u)

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. The concentric spheres of radii R and r have positive charges q₁ and q₂ with equal
  2. Characteristic X-rays are produced due to
  3. If a gymnast, sitting on a rotating stool with his arms outstretched, suddenly
  4. The approximate depth of an ocean is 2700 m. The compressibility of water is
  5. A rectangular coil of length 0.12 m and width 0.1 m having 50 turns of wire