Question

plzzZzzzzzz help very urgent

Answer 1

1st- because the friction between floor and our feet reduces

Answer 2

1.. the frictional force between our leg and the ground reduces..

2.. lighter box has less force to the ground than the heavy box..

3.. when we pull a thing , we are breaking the force of attraction .so we have to apply more strength..

4.. spike shoes give more grip to run on the ground..

HOPE THIS HELPS UU
THANKUU AND HAVE A NICE DAY
BYEEE