While riding in a hot air balloon,
which is steadily at a speed of 1.01 m/s, and your phone accidentally falls.
<span>(a)
</span>The
speed of your phone after 4 s is:
V= u +
at
V= 1.01
+ (9.8)(4)
V=
40.21 m/s
<span>(b)
</span>The balloon
is ____ far:
V = u +
at
V= 1.01
+ (9.8)(1)
V=10.81
–distance at 1 one second
V= u +
at
V= 1.01
+ (9.8)(2)
V= 20.61-distance
at 2 seconds
V= u+ at
V=
30.41- distance at 3 seconds
V=
40.21- distance at 4 seconds
D=
102.04 m
<span>(c)
</span>If the
balloon is rising steadily at 1.01 m/s:
V= -1.1
m/s
<span> </span>
Answer:
22) 5.6 Kg.m/s
23) 0.067 Kg
24) 1.16 m/s
Explanation:
Momentum is found by multiplying mass and velocity
P=mv where P is momentum, m is mass of object and v is the velocity
22
Given
Mass, m=2 Kg
Rate, v=2.8 m/s
Relationship
P=mv
Solution
P=mv=2*2.8=5.6 Kg.m/s
23
Given
Momentum, p=0.1 Kg.m/s
Rate, v=1.5 m/s
Relationship
P=mv and making m the subject then
Solution
24
Given
Momentum,
Mass,
Relationship
P=mv and making v the subject then
Solution
Answer:
The answer answer is 150 km
Answer:
V = 6.65 [volt]
Explanation:
We must first find the power generated, power is defined as the amount of energy consumed or generated in a given time.

where:
P = power [w]
E = energy = 40 [J]
t = time = 30 [s]
![P =40/30\\P = 1.33[w]](https://tex.z-dn.net/?f=P%20%3D40%2F30%5C%5CP%20%3D%201.33%5Bw%5D)
Now we can calculate the voltage or potential drop by means of the power, the power is calculated by means of the product of the voltage by the current.

where:
V = voltage [volts]
I = current = 200mA = 0.2 [A]
![V = P/I\\V = 1.33/0.2\\V = 6.65 [Volt]](https://tex.z-dn.net/?f=V%20%3D%20P%2FI%5C%5CV%20%3D%201.33%2F0.2%5C%5CV%20%3D%206.65%20%5BVolt%5D)
The two factors that increase the size of a population are natality, which is the number of individuals that are added to the population over a period of time due to reproduction, and immigration, which is the migration of an individual into a place.