Answer:
Definition - The friction that occurs when an object rolls across a rolling friction is easier to overcome than sliding friction.
Ex - Anything with wheels (cars, bicycle,etc) or ball rolling.
Explanation:
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Answer:
<h3>The answer is 19,800 J</h3>
Explanation:
The work done by an object can be found by using the formula
<h3>workdone = force × distance</h3>
From the question
force = 120 N
distance = 165 m
We have
work done = 120 × 165
We have the final answer as
<h3>19,800 J</h3>
Hope this helps you
Yes, it is possible to determine the final speed of the rollercoaster if the initial speed and the height to be reached are known.
According the principle of conservation of energy, the total kinetic energy is equal to the total potential energy.
![P.E _i + K.E_i = P.E_f + K.E_f \\\\mgh_i + \frac{1}{2} mv_i^2 = mgh_f + \frac{1}{2} mv_f^2\\\\gh_i + \frac{1}{2} v_i^2 = gh_f + \frac{1}{2} v_f^2\\\\g(0) + \frac{1}{2} v_i^2 = gh_f + \frac{1}{2} v_f^2\\\\\frac{1}{2} v_i^2 = gh_f + \frac{1}{2} v_f^2\\\\v_i^2 = 2gh_f + v_f^2\\\\v_i^2 - 2gh_f = v_f^2\\\\v_f = \sqrt{v_i^2 - 2gh_f}](https://tex.z-dn.net/?f=P.E%20_i%20%2B%20K.E_i%20%3D%20P.E_f%20%2B%20K.E_f%20%5C%5C%5C%5Cmgh_i%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20mv_i%5E2%20%3D%20mgh_f%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20mv_f%5E2%5C%5C%5C%5Cgh_i%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20v_i%5E2%20%3D%20gh_f%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20v_f%5E2%5C%5C%5C%5Cg%280%29%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20v_i%5E2%20%3D%20gh_f%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20v_f%5E2%5C%5C%5C%5C%5Cfrac%7B1%7D%7B2%7D%20v_i%5E2%20%3D%20gh_f%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20v_f%5E2%5C%5C%5C%5Cv_i%5E2%20%3D%202gh_f%20%2B%20v_f%5E2%5C%5C%5C%5Cv_i%5E2%20%20-%202gh_f%20%3D%20v_f%5E2%5C%5C%5C%5Cv_f%20%3D%20%5Csqrt%7Bv_i%5E2%20%20-%202gh_f%7D)
where;
<em> is the </em><em>initial velocity</em><em> of the roller coaster</em>- <em />
<em> is the </em><em>final velocity </em><em>of the roller coaster</em> - <em />
<em> is </em><em>maximum height </em><em>reached by the roller coaster</em>
Thus, it is possible to determine the final speed of the rollercoaster if the initial speed and the height to be reached are known.
Learn more about conservation of energy here: brainly.com/question/166559
<span>If the </span>base<span> has 6 sides, the </span>prism<span> will also have 6 </span>lateral faces. It will all depend how many sides the base has and the lateral face of the prism will equal to the number of sides of the base. In short, if the base<span> has 'x' sides, then the </span>prism<span> will </span>have<span> 'x' </span>lateral faces<span>.</span>