Q5 of 37 Page 19

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

Given in question:


Horizontal range=50m (Assuming it to be R1)


Angle=15° (Assuming it to be θ1)


And we have to find for


Angle =45° (Assuming it to be θ2)


Also velocity is same both cases.


Relation between horizontal range R1 and θ1 is



Similarly for range R2 and θ2 it is



Dividing both equations,


More from this chapter

All 37 →
3

Figure 4.1 shows the orientation of two vectors u and v in the XY plane.

If u = aî + bĵ and


V = pî +qĵ



Which of the following is correct?


 4

The component of a vector r along X-axis will have maximum value if

 6

Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are

 7

In a two-dimensional motion, instantaneous speed v0 is a positive constant. Then which of the following are necessarily true?