Jimmy was standing on the sidewalk waiting for the bus to pick him up. Even though he is not moving, gravity is pulling him down with a force of 350 N. How is it possible to have a force acting on him and have him still remain motionless? There is a normal force acting on him that pushes him up with a force equal to the gravitational force.

There is a normal force acting on him that pushes him up with a force equal to the gravitational force.

Gravity is a non-contact force, so it doesn't affect him while he is touching the ground.

Gravity is a non-contact force, so it doesn't affect him while he is touching the ground.

The gravitational force is completely absorbed by the sidewalk he is standing on.

The gravitational force is completely absorbed by the sidewalk he is standing on.

Even though the gravitational force is pulling him down, he is creating an applied force by touching the sidewalk that pushed him up. A b c or d?

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.

if someone had the list of traits you provided