Question

A sparrow and a crow are having the same kinetic energy during a flight. Which of the two is moving fast and why?

Answer 1

As we know, $K.E=\frac{1}{2}\times m\times v^2$

where,

$$\begin{gathered} K.E=KineticEnergy \\ m=mass \\ v=velocity \end{gathered}$$

Explanation:

1. Having the same kinetic energy for sparrow and crow.
2. Velocity of the sparrow will be greater because the mass of the sparrow is smaller than the crow.

Thus, the sparrow is moving fast.