Urrent Attempt in Progress The symbols for kinetic energy, mass and speed are, respectively, KE, m and v. The MKS units of kinetic
energy, mass and speed are, respectively, joules, kilograms and meters per second. Joules are equal to kilogram square meters per square seconds. Which of the following equations is incorrect by unit analysis?

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

If a car has a speed of 20 m/s, how long will it take to go 155 m? a. 3100 s b. 135 s c. 2.1 s d. 7.8 s