The force of friction on a moving object always acts:
A. in the direction of motion
B. opposite to the direction of motion
C. in the direction of motion upwards
D. opposite to the direction of motion downwards
Answer:B
The force of friction on a moving object always acts:
A. in the direction of motion B. opposite to the direction of motion C. in the direction of motion upwards D. opposite to the direction of motion downwards