Question

The equation gives the speed at impact, V metres per second, of an object dropped from a height of h metres. SHOW WORK From what height must an object be dropped to impact the ground at a speed of 18.6 m/s?

Answer 1

h = 17.65 m

Explanation:

The given equation gives the speed at impact :

`v=√(2gh)`

h is height form where the object is dropped

Put v = 18.6 m/s in the above equation.

`h=(v^2)/(2g)\\\\h=((18.6)^2)/(2* 9.8)\\\\h=17.65\ m`

So, the object must be dropped from a height of 17.65 m.