A35 g steel ball is held by a ceiling-mounted electromagnet 4.0 m above the floor. a compressed-air cannon sits on the floor, 4.8 m to one side of the point directly under the ball. when a button is pressed, the ball drops and, simultaneously, the cannon fires a 25 g plastic ball. the two balls collide 1.0 m above the floor. part a what was the launch speed of the plastic ball?

Answer

given,

mass of the steel ball = 35 g = 0.035 kg

the horizontal distance is

( v cos θ ) t = 4.8..........(1)

the vertical distance is

...(2)

since,

..................(3)

using equation(2) and (3)

(v t)² (cos²θ+ sin²θ) = 4.8² + 4²

(v t)²  = 39.04

t = 0.76 s

the speed is

vt = 6.25

v × 0.76 = 6.25

v = 8.22 m/s

falling water hydro = water .. spectcular places these plants are

an energy transformation flow diagram is shown

where is it ?