Question 11 Mark
What is the average friction force when a person has a usual 1km walk?
Answer
View full question & answer→Zero.
As $<\vec{\text{a}}>=\frac{\vec{\text{v}}_{\text{f}}-\vec{\text{v}}_{\text{i}}}{\text{t}}=\vec{\text{0}}$ as men starts with zero velocity and ends with zero velocity.
As $<\vec{\text{a}}>=\frac{\vec{\text{v}}_{\text{f}}-\vec{\text{v}}_{\text{i}}}{\text{t}}=\vec{\text{0}}$ as men starts with zero velocity and ends with zero velocity.
