Question

A marter shell is fired with the velocity of 10m/s at an angle of 45 degree range of shell is

Answer 1

The velocity is split in to two components. Alond vertical and horizontal axis. Since angle of projection is 45°, both the components are same, i.e., 10/√2

Time of flight is 2*(initial vertical velocity)/g i.e., √2 .(g = 10m/s^2).
Now range = horizontal velocity*time of flight.

Therefore, range is 10m