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3 years ago

Compare the momentum of a 7160 kg truck moving at 5.00 m/s to the

Physics

1 answer:

Bess [88]3 years ago

3 0

Answer:

2,200

Explanation:

truck=35800,car=33600

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While riding in a hot air balloon, which is steadily descending at a speed of 1.01 m/s, you accidentally drop your cell phone?

mote1985 [20]

While riding in a hot air balloon, which is steadily at a speed of 1.01 m/s, and your phone accidentally falls.

(a) The speed of your phone after 4 s is:

V= u + at

V= 1.01 + (9.8)(4)

V= 40.21 m/s

(b) 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

(c) If the balloon is rising steadily at 1.01 m/s:

V= -1.1 m/s

5 0

3 years ago

Please help !! ASAP

umka2103 [35]

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

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

Given

Momentum, p=0.1 Kg.m/s

Rate, v=1.5 m/s

Relationship

P=mv and making m the subject then

$m=\frac {P}{v}$

Solution

$m=\frac {0.1 Kgm.s}{1.5 m/s}\approx 0.067 Kg$

Given

Momentum, $p=4.9\times 10^{8} Kg.m/s$

Mass, $m=4.23\times10^{8} Kg$

Relationship

P=mv and making v the subject then

$v=\frac {P}{m}$

Solution

$m=\frac {4.9\times 10^{8} Kgm.s}{4.23\times10^{8} }\approx 1.16 m/s$

5 0

3 years ago

A car travelled at 50km/hr for 3 hours, how far did the car travel

leva [86]

Answer:

The answer answer is 150 km

6 0

3 years ago

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A current of 200mA through a conductor converts 40 joules of electrical energy into heat in 30 seconds determine the potential d

gladu [14]

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.

$P=\frac{E}{t}$

where:

P = power [w]

E = energy = 40 [J]

t = time = 30 [s]

$P =40/30\\P = 1.33[w]$

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.

$P =V*I$

where:

V = voltage [volts]

I = current = 200mA = 0.2 [A]

$V = P/I\\V = 1.33/0.2\\V = 6.65 [Volt]$

8 0

3 years ago

What are the 2 factors that affect population size? Explain your answer.

dmitriy555 [2]

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.

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3 years ago

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