(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A ball is fired vertically upward from the top outside ledge of a 256ft high building with an initial velocity of 160ft/sec. Assue lgl=32.0 ft/sec^2.

2. Relevant equations

What is the speed of the ball at t=3 seconds?

and

What is the velocity of the ball just before it hits the ground at the base of the building?

and

What was the total time the ball was in the air?

3. The attempt at a solution

it takes the ball 5secs to hit the max point of trajectory, the ball goes 400ft upward,

to find speed you have take the change in distance/ change in time. the time would be 3-0 but the distance is where im stuck.

to find the velocity of the ball just before it hits ground. you take the change in displacement/change in time, but what is the time

the totall time it is in the air, i am totally lost on

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# Analytical kinematics

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