No, a human would not be able to walk on Mars barefoot. Walking on Mars without proper protection would be extremely dangerous and likely impossible for several reasons:
Atmosphere: Mars has a very thin atmosphere composed mainly of carbon dioxide, with only about 0.6% of Earth's atmospheric pressure. The lack of a substantial atmosphere means there is very little air to breathe and provides minimal protection against harmful cosmic radiation and solar radiation.
Temperature: Mars is an extremely cold planet, with average temperatures around -80 degrees Fahrenheit (-62 degrees Celsius) and even colder at night. Walking barefoot on such a cold surface would lead to rapid heat loss and frostbite.
Terrain: Mars' surface is covered in abrasive dust and rocks, some of which may be sharp or jagged. Walking barefoot would expose the feet to potential injuries, cuts, and abrasions.
Gravity: Mars has a lower surface gravity compared to Earth (about 38% of Earth's gravity). This lower gravity could affect the way a person's body moves and functions, making walking without proper footwear even more challenging.
In order to walk safely on Mars, astronauts would require specialized space suits designed to provide life support, regulate temperature, and protect against radiation and dust. These suits would have boots with sturdy soles and insulation to keep the feet safe from the harsh Martian environment.