Question

A car and track are moving with same velocity 60km/h. Which has more Carnatic energy? ​

Answer 1

Answer:

mirror formula:

f/1 = 1/v +1/u

differentiating both side:

dv/v^2 =−du/v^2

⟹ dv/du =− v^2/u^2

So when rear car approaches, initially it appear at rest as image is formed at focus. When car approaches nearer this speed will appear to increase.