free fall and terminal velocity.

Question 1

what is the difference between mass and weight and what is the formula?

Answer 1

mass is the amount of matter in an object.
weight is the force due to gravity on a mass.
w= mg.

Question 2

how are weight and acceleration connected?

Answer 2

acceleration is due to gravity (=weight/ mass) is equal to the gravitational field strength.
units: m/s².

Question 3

on earth what is the acceleration in free fall?

Answer 3

9.8m/s².

Question 4

what is weight supported by and what happens if that was removed and what is the formula?

Answer 4

supported by reaction from the floor.
remove floor, weight is unbalanced.
acceleration= weight/ mass.

Question 5

example: if you had hanging balls with a person about to walk through them what does the speed they’re going at relate to the force?

Answer 5

they’re going slow.
force from each particle represented by the hanging balls is small.

Question 6

example: if you had hanging balls with a person about to run through them what does the speed they’re going at relate to the force?

Answer 6

they’re going fast.
force from each particle represented by the hanging balls is large.

Question 7

air resistance and particles: what is drag and when does it happen?

Answer 7

frictional force that occurs when a surface moves through a fluid.

Question 8

air resistance and particles: frictional force that occurs when a surface moves through a fluid. if this fluid is air what do we call it?

Answer 8

air resistance.

Question 9

what will happen as an object goes faster?

Answer 9

it will hit more particles every second, more energy is transferred to the particles and more air resistance.

Question 10

as an object has a small cross section or is streamlined what will happen?

Answer 10

hit less air particles every second so there will be less air resistance.