1.

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

Answer»
The horizontal range of a projectile fixed at an angle=15°
Range=50m

In direct case range=50=u^2/g (sin 2*15°) 
u^2/2g=50
u^2=100g

In 2nd case range=u^2/g(sin 2 *45) 
                                 =100g/g*1 (sin 90°=1) 
                                  =100m
Option c is correct answer. 


Discussion

No Comment Found

Related InterviewSolutions