# data[].attributes.body
1. a) Terminal velocity is reached when weight= drag force so resultant force is zero. Terminal velocity is reached when the acceleration is zero

As object accelerates downwards due to force of gravity the air resistance increases and eventually weight=air resistance

ii) A=pi r^2

A= pi (0.002)^2= 1.26 * 10^-5 m^2

V= 4/3 * pi * (0.002)^2= 3.35* 10^-8 m^3

P=m/v

M= 1000 * 3.35 * 10^-8= 3.35 * 10^-5 kg

W=mg

W= 3.35 * 10^-5 * 9.81= 3.29 * 10^-4 N

3.29 * 10^-4 = 6.80 * 10^-6 * v^2

V= 6.96 ms

# data[].attributes.body
Q1a)i) terminal velocity is when the resultant force is zero which means velocity will be constant when weight,upthrust, drag are all balanced.
ii)pi x r^2=A
3.141 x (0.002)^2=1.256x10^-5m^2
V=4/3x3.141x(0.002)^3=3.35x10^-8
m=PxV
1000x(3.35x10^-8)=3.35x10^-5
W=3.35X10^-5x9.81=3.286x10^-4

3.286x10^-4=6.8x10^-6xv^2
v^2= 3.286x10^-4/6.8x10^-6
v= square root of 48.32
v=6.951ms

# data[].attributes.body
Q1 (a) (i) terminal velocity is a constant velocity when weight, upthrust and drag are balanced.

# data[].attributes.body
(i)  the terminal velocity is constant constant velocity that the rain reached when the weight is equal to drag and upthrust , when  the force is zero.
(ii)  A = pi*(.002)^2 = 1.26 * 10^-5 m^2

V = 4 /3 pi*  (0.002 m )3 = 3.35 *10^-8 m^3

m =1000 kg m-3 * 3.35 *10^-8 m^3 = 3.35 *10^-5 kg
W = 3.35 * 10^-5 kg * 9.81 N kg^-1 = 3.29 * 10^-4 N

3.29 * 10^-4 N = 0. 45 *1.2 kg m^-3 * 1.26 * 10^-5 m2 * v 2

3.29 * 10-4 N = 6.80 * 10^-6 *v 2
v=  6.96 m s^-1

# data[].attributes.body
(i)Terminal velocity is the maximum velocity of the rain which makes the resultant force = 0

(ii) V = 6.96 m/s^-1

# data[].attributes.body
Terminal velocity is the maximum velocity obtained by an object so since the net force of the raindrop is zero so the acceleration will also be zero

# data[].attributes.body
Q1)a)i) terminal velocity is a constant velocity reached when the weight and drag forces are balanced and their resultant force is 0.
ii) 6.96 m/s

# data[].attributes.body
1.(a)(i) terminal velocity is velocity at which acceleration is zero, and when the total upward force is equal to the total downward force. its a constant velocity.

(ii) A = π x (0.002)^2 = 1.26 x 10^-5 m2
V = 4/3 x π x (0.002)^3 = 3.35 x 10^-8 m3
m = 1000 x 3.35 x 10^-8 = 3.35 x 10^-5
W = 3.35 x 10^-5 x 9.81 = 3.29 x 10^-4
3.29 x 10^-4  = 0.45 x 1.2 x 1.26 x 10^-5 x v^2
v = 6.96 ms

# data[].attributes.body
1)a)i) Terminal velocity is the constant maximum velocity the rain drop reaches when there is no acceleration.Terminal velocity occurs when there will be no resultant force acting on the rain drop.
ii) A=pi x r^2
A=pi x (0.002)^2 = 1.26 x 10^-5
V=4/3 x pi x (0.002)^3= 3.35 x 10^-8
P=m/v
m= 1000x3.35x10^-8= 3.35x10^-5
W=mg
W=3.35 x 10^-5 x 9.81= 3.29 x 10^-4
W=F
3.29 x 10^-4= 6.8x10^-6 x v^2
V=6.96ms

# data[].attributes.body
1a) (i) terminal velocity is when acceleration is zero and drag forces equal normal force. An object dropped from rest will increase its speed until it reaches terminal velocity

(ii) v= 6.96 m/s

# data[].attributes.body
When water vapour in the atmosphere cools it condenses, forming tiny drops of water.  These drops increase in size by colliding with each other and fall back to the ground as rain. (a) As a raindrop falls through the air it eventually reaches its terminal velocity.  The upthrust on the raindrop can be considered to be negligible.   (i) Explain what is meant by the terminal velocity of the raindrop.