A car is traveling north at 1.77m/s. After 12 s its velocity is in the same direction. Find the magnitude and direction of the car's average acceleration
A) 0.30 m/s2, south
B) 2.7 m/s2, south
C) 0.30 m/s2, north
D) 2.7 m/s2, north
A
You might also like to view...
In the Doppler effect it is important to distinguish between
A) frequency and speed. B) speed and velocity. C) speed and acceleration. D) distance and displacement.
Two forces are the only forces acting on a 3.0-kg object which moves with an acceleration of 3.0 m/s2 in the positive y direction. If one of the forces acts in the positive x direction and has a magnitude of 8.0 N, what is the magnitude of the other force?
a. 12 N b. 14 N c. 16 N d. 18 N e. 22 N
The Drake equation calculates N. What is N?
A) the number of intelligences in the entire universe B) the number of technical civilizations in our galaxy presently C) the number of stars with habitable planets D) the number of planets with life in the universe E) the number of planets in just our galaxy
A mouse is running away from a cat at 0.75 m/s and, at 1.25 m from his mouse hole, he accelerates at a constant rate until he reaches his hole safely, 0.75 s later. What acceleration did he undergo during the final 1.25 m of his escape?
A. 1.8 
B. 1.2
C. 4.8
D. 2.4
E. 6.4