*** For Best Answer/Higher Rating: Please explain your answer, define what the v
ID: 1276842 • Letter: #
Question
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1. If you were to drop a ball, releasing it from rest, what information would be needed to predict how much time it would take for the ball to hit the floor? What assumptions must you make?
2. If the ball in Question 1 is traveling at a known horizontal velocity when it starts to fall, explain how you would calculate how far it will travel horizontally before it hits the ground.
Explanation / Answer
initial velocity in down ward direction = u = 0
s= -y = -h..............a = -g
s = ut + 0.5*a*t^2
-h = 0 - (1/2)*g*t^2
t = sqrt(2h/g)
2)
initial velocity in down ward direction = u = 0
s= -y = -h..............a = -g
s = ut + 0.5*a*t^2
-h = 0 - (1/2)*g*t^2
t = sqrt(2h/g)
by this time t it travels horizantal distance
ax = 0
x = vx*t + 0.5*a*t^2
x = Vx*t = vx*sqrt(2h/g)
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