Question

A body is thrown with a speed of 30 m/s at angle 30º with horizontal from a horizontal floor. The time after with it is moving perpendicular to it's initial direction of motion is

Answer 1

Formula :

Time taken to reach maximum height is equal to :

Time = U Sin Ф / g

U = initial velocity

Ф = Projectile angle

g = acceleration due to gravity

In our case :

Ф = 30°

U = 30 m/s

g = 10

Time = (30 × Sin 30) / 10

(30 × 0.5) / 10 = 1.5 seconds