An object travels North at 8 m/s for 3 s and then travels South at 7 m/s for 4 s. What are the object's average speed and velocity?
1 Answer
Nov 24, 2016
0,57 m/s
Explanation:
You must calculate the actual distance from the initial and final points ( 4m South = 7m/s x 4s South - 8mM/s X 3s North ), the total time needed (3+4 =7 s) and calculate the average speed by dividing space and time (4m)/(7m/s) = 0,57 m/s
