The minimum speed with which Captain Brady had to run off the edge of the cliff to make it safely to the far side of the river is around 6 meters per second.
<h3>Further explanation</h3>
This is a free fall 2-dimensional type of problem, therefor we can write equations for both dimensions which model the fall of captain Brady. Let's call <em>x </em>the distance travelled by the captain on the horizontal direction and <em>y </em>the distance travelled on the vertical direction.
Lets suppose that Brady jumped with a complete horizontal velocity from a point which we will call the origin (meaning zero horizontal and vertical displacement), and let's call <em>ta</em> the time it took for captain Brady to reach the river (meaning the time he spent on the air). The equations of motion for the captain will be:


We know that at time <em>ta</em> the captain would have traveled 6.7 m on the horizontal direction, and 6.1 m in the vertical direction. Therefor we can write that:


Which gives us a system of 2 equations and 2 unknowns (<em>V</em> and <em>ta</em>). From the second equation we can solve for <em>ta</em> as:

And solving for <em>V</em> on the first equation, we find that:

Which is almost 6 meters per second.
<h3>Learn more</h3>
<h3>Keywords</h3>
Free fall, projectile, gravity
Answer:
the second process of using the the shovel to move the snow as it takes a longer time meaning more power is expended
Answer:
The potential energy is 
Explanation:
Given that,
Force 
We need to calculate the potential energy
Using formula of work done

Put the value of F

On integration

...(I)
U = 0, x = 0 so C = 0
Put the value of c and α in equation (I)


Hence, The potential energy is 
Answer:
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