Question

A car is moving towards a plane mirror at a speed of 30m/sec. then the relative velocity of its image with respect to the car will be;

15m/s

45m/s

60m/s

30m/s​

Answer 1

Answer:

x’ = -x, where x is position of observer and x’ is position of the image.

With mirror at 0.

So, if dx/dt = 2 m/s, dx’/dt = -dx/dt = - 30m/s.

using the classical formula for relative speed,

Vrel = dx’/dt - dx/dt = -2dx/dt = -60m/s.

So, the image is approaching the observer at 60 m/s.

Hence option B is the right answer

Explanation:

answer is 60 m/ s

Give thanks

Answer 2

Answer:

60

Explanation:

to find the relative speed of 2 objects coming towards each other, we add their speed by which they are approaching each other.