A soccer ball leaves a cliff 20.2 m above the valley floor, at an angle of 10 degrees above the horizontal. The ball hits the valley floor 3.0 seconds later. What is the initial velocity of the ball?
1 Answer
Dec 2, 2015
Explanation:
The situation looks like this:
I will adopt a convention that "up is positive". This means that
We can use:
This becomes: