A small bouncy ball is dropped from the flat roof of an abandoned, and as-yet unrepurposed...

A small bouncy ball is dropped from the flat roof of an abandoned, and as-yet unrepurposed industrial building. The ball is observed to take 1/8 of a second to fall across a broken window with the total height of 1.2m. After the ball hits the ground, it bounces back upward and again traverses the window’s height in 1/8s of a second on its way toward the top of the roof. We thus assume that the ball loses no energy upon impact with the ground. If the time that the ball spends below the bottom of the window is 2s, answer the following questions.

a) What is the velocity of the ball at the top and bottom of the window, respectively, when the ball is on its way down?

(b) What is the time it takes the ball to fall from the top of the building to the top of the window?

Solutions

Expert Solution

Here we apply concept of kinematics and equation of motion for constant acceleration.

genius_generous answered 2 hours ago

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