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2 years ago

What is the momentum of an airplane with a mass of 360,000 kg moving down the runway at 1.5 m/s?

Physics

1 answer:

Ymorist [56]2 years ago

5 0

Momentum is mass times velocity
360000 * 1.5 =540,000kg m/s

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honor physics The velocity of a 200 kg object is changed from 5 m/s to 25 m/s in 50 seconds by an applied constant force. a. Wha

Ksivusya [100]

Answer:

(a) 4000 kgm/s.

(b) 80 N

Explanation:

(a) Change in momentum: This can be defined as the product of the mass of a body and its change in velocity. The S.I unit of impulse is Ns or kgm/s

Mathematically, Change in momentum is expressed as

ΔM = mΔv ..................................... Equation 1

Where ΔM = change in momentum, m = mass of the object, Δv = change in velocity = v₂ - v₁

Given: m = 200 kg, Δv = v₂ - v₁ = 25-5 = 20 m/s.

Substituting into equation 1

ΔM = 200(20)

ΔM = 4000 kgm/s.

Hence the change in momentum = 4000 kgm/s

(b)

Force: This can be defined as the ratio of the change in momentum of a body to the time required for the change.

F = ΔM/t.............................. Equation 2

Where F = force, ΔM = change in momentum, t = time.

Given: ΔM = 4000 kgm/s, t = 50 second.

Substituting into equation 2

F = 4000/50

F = 80 N.

Hence the force = 80 N

7 0

3 years ago

Si un auto se mueve en rapidez constante de 25,0m/s a lo largo de 2500 m en línea recta, ¿cuál es la magnitud de la fuerza resul

Nataly_w [17]

Answer:

F= 0

Explanation:

This exercise we use Newton's second law,

F = m a

in this case as the speed is constant the acceleration is zero therefore the force is zero.

Change we can solve it using Newton's first law, which states that every vehicle remains still or with constant speed if there is no extensive outside acting on it

We see that with any of the two forms the sum of the applied forces is zero

∑ F = 0

3 0

3 years ago

A rocket ship carrying passengers blasts off to go from New York to Hong Kong, a distance of about 13,000 km. (a) How fast (in t

lapo4ka [179]

Answer:

0.14c

0.003 s

Explanation:

See attachment

8 0

3 years ago

1) Roland has built a circuit, and is using a device called an ammeter to measure how quickly electrical current is flowing thro

zaharov [31]

Answer:

1) 3.9 %

2) 1,38 kg

3) 0.13 cubic meters

Explanation:

Part 1)

Calculated current = 0.180 amps

Measured current: 0.173 amps

percent error : $\frac{0.180 - 0.173}{0.180} \,100=3.9$ %

Part 2)

mass1 = 1,155 kg

mass2 = 0.22 kg

Addition; 1.155 + 0.22 = 1 375 kg which should be rounded to just two decimals according to the addition rules for uncertainties:

Answer : 1,38 kg

Part 3)

Volume = 0.885 x 0.20 x 0.75 cubic meters = 0.13275 cubic meters

Notice that the smallest number of significant figures among the set of dimension given is two. Therefore, our answer should be rounded to two significant figures. That is:

Volume = 0.13 cubic meters

6 0

3 years ago

Can someone please help me I don’t understand this

jolli1 [7]

I think it’s a because it the only reasonable answer

4 0

2 years ago