A car accelerates from rest to 30 km/h. Later, on a highway it accelerates from 30 km/h to 60 km/h. Which takes more energy, going from 0 to 30, or from 30 to 60?
(a) 0 to 30 km/h.
(b) 30 to 60 km/h.
(c) Both are the same.
Ans: (b) 30 to 60 km/h.
You might also like to view...
When calculating the rate of a disease, which of the following is generally the denominator of the calculation?
a. Population infected b. Population at risk c. Total state population d. Total world population
An object is being acted upon by three forces and moves with a constant velocity. One force is 60.0 N along the x-axis, the second is 75.0 N along the y-axis. What is the magnitude of the third force?
A) 135 N B) 15.0 N C) 48.0 N D) 67.5 N E) 96.0 N
A blue camera filter appears blue because it transmits blue light, absorbing all other colors
Indicate whether the statement is true or false
In science, the tendency of an experiment to produce a particular result is referred to as
A) a deviation B) bias C) an error D) an uncertainty