A cheetah reaches a final velocity of 39.4 ft/sec in 1.25 seconds. If it accelerated at a rate of 2.10 ft/sec2, what was its initial velocity, and how far did it travel in this time?

Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.

What is the electric force acting between two charges of -0.0045 c and -0.0025 c that are 0.0060 m apart? use fe=kq1q2/r^2 and k = 9.00 x 10^9 n*m^2/c^2 a. 1.7 x 10^7 n b. -1.7 x 10^7 n c. -2.8 x 10^9 n d. 2.8 x 10^9 n

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?