10 Questions
What is the kinetic energy of the 50.0 g cannon shell traveling at 700 m/s?
1715000 J
How much work is done in raising 100.0 kg for a potential difference of 196 N/kg?
19600 J
For what potential difference must a 400 kg pile driver fall to do 15,000 J of work?
37.5 m
How much work is needed to stop a 1400 kg truck traveling at 100 km/h?
490000 J
What average braking force is required to stop a 2 tonne truck traveling at 80 km/h in 200 m?
160 kN
In the given scenario, what is the kinetic energy of the mass $m$ when it reaches the surface?
$KE_{surface} = mgh$
What does the equation $KE_{surface} + PE_{surface} = KE_{height h} + PE_{height h}$ represent?
Conservation of mechanical energy
What is the work done by the external force (gravitational attraction) on the mass $m$?
$W = PE_{surface} - PE_{height h}$
What assumption is made about the gravitational field strength in the given scenario?
It is constant
Which assumption is made about the kinetic energy of the Earth in the given scenario?
It can be assumed to be negligible
Test your understanding of work and mechanical energy with this quiz. Calculate the kinetic and potential energy of a cannon shell, as well as its total mechanical energy. Additionally, practice determining the work done by a pump when raising water. Ideal for physics students and enthusiasts looking to reinforce their knowledge in this area.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
