What is the kinetic energy, in joules, of a 7.0 kilogram bowling ball that is travelling 4.5 meters per second?
A. 106. J
B. 71. J
C. 31.2 J
D. 142. J
E. 100. J
A. Incorrect. You appear to have used the correct equation, but confused the variables. Make sure the values you are inserting in the calculator are right.
B. Correct. A straightforward use of Equation 1.29.
C. Incorrect. This is the product of the two values given, but not the answer. Review the definition of kinetic energy and try again.
D. Incorrect. The correct answer is one half of this. Remember K.E. = (1/2)Mv2
E. Incorrect. This answer most likely results from making multiple errors. Check your work again.
?
You might also like to view...
“All employees installing windows must be equipped with lifelines” is an example of a safety and loss prevention rule typically outlined by management in a _____.
a. policy statement b. local ordinance c. contractor agreement d. feasibility study
Agricultural Education was once called _____
A) Vocational Agriculture B) Agriculture Programs C) Studies in Agriculture D) Farm Science
The term used to describe the speed regulation provided by a tachometer is __________.
A. torque control B. damping C. stability D. attenuation
As loads are added in a parallel circuit, the total resistance of the circuit ____.
A. will increase B. will decrease C. will remain the same D. cannot be determined