Question #700d5
1 Answer
Explanation:
We observe that the projectile when it just hits the ground will have velocity
Also it will have velocity
Assuming that air resistance is negligible. And noticing that both velocities are perpendicular to each other and therefore, independent of one another, there is no change in the velocity
To calculate velocity
The projectile has a potential energy when it is launched which is given by
As the ball falls down, due to the Law of Conversion of Energy, this gets converted in to the kinetic energy of the projectile in the
Equating the two at a point when projectile just hits ground
or
We know that acceleration due to gravity
We obtain