A man is walking from east to west on a rough surface. The force on the man is directed :
A. from west to east
B. from east to west
C. along the north
D. along the west
Answer:A
A man is walking from east to west on a rough surface. The force on the man is directed :
A. from west to east B. from east to west C. along the north D. along the west
Explanation: Force of friction always acts in a direction opposite to direction of motion.