Question

A discus thrower achieves a high throw of 100m with the discus released at an angle of 30° calculate the initial speed of the discuss.​

Answer 1

u = 88.54 m/s

Step-by-step explanation:

Given that,

A discus thrower achieves a high throw of 100 m.

Angle of projection is 30°

We need to find the initial speed of the discuss.​ It is a cse of projectile motion. The maximum height reached by the discus is given by :

`H=(u^2\sin^2\theta)/(2g)`

u is the initial speed of the discus

So,

`u^2=(2* 9.8* 100)/(\sin^2(30))\\\\u=√(7840)\\\\u=88.54\ m/s`

So, the initial speed of the discus is 88.54 m/s.