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**force, acceleration problems!!!!**

## Homework Statement

hi, im new to this and this is my first question, so any help would be great!!im a bit of a physics novice, but i am trying to work out the force exerted by the foot while walking. I know force=weight/area and so from this i can work out force exerted when standing. how do I work out force exerted while walking? the speed the person is walking is 130cm/s, this is constant for 5 minutes. can i use the F=mass x acceleration in this instance if the speed is constant?? i hope theres enough information there if i have left anything out let me know!thanks emily xx