If a child crawls towards a mirror at a rate of 0.25 m/s, then at what speed will the child and the child 's image approach each other?

Select one: a. 0.25 m/s b.0.50 m/s c. 0.125 m/s d. 1 m/s

A child walks towards a fixed plane mirror at a speed of 5 km $h^{-1}$. The velocity of the image with respect to mirror is -

A child walks towards a fixed plane mirror at a speed of 5 km $h^{-1}$. The velocity of the image with respect to mirror is -

A child is standing at one end of a long trolley moving with a speed v on a smooth horizontal track. If the child starts running towards the other end of the trolley with a speed u, the centre of mass of the system (trolley $+$ child) will move with a speed.