The horizontal range of a projectile fired at an angle of 15o is 50 m. If it is fired with the same speed at an angle of 45 degrees, its range will be a) 60 m b) 71 m c) 100 m d) 141 m

Answer:

The correct answer is c) 100 m

Given:

The horizontal range of a projectile that is fixed at an angle to the horizontal plane
Range
In the first case range


In 2nd case range

As we know 

=100 m$