Question

xi) A projectile is thrown at an angle of 30° to
the horizontal. What should be the range
of initial velocity (u) so that its range
will be between 40m and 50 m? Assume
g= 10 m s-2
[Ans: 21.49 Su<24.03 m s?]​

Answer 1

Answer:

24 to 37 m/s

Explanation:

R = [u^2 sin2@]/g

400×2/√3 = u^2

800√3 = u^2

u = √1385.6 = 37 m/s

R = [u^2 sin2@]/g

500×2/√3 = u^2

u = √577.35

= 24 m/s

So, should be between 24 m/s & 37 m/s