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spayn [35]
3 years ago
14

Two cars move down a hill at a constant velocity. Car c is much larger than car d. The car that has a greater momentum is:

Physics
2 answers:
babunello [35]3 years ago
7 0

Answer:

C

Explanation:

When an object has a greater mass than the drag force pushing it back then it    is moving forward therefore making car C faster than car D. If car D was much smaller it wouldn't have enough mass to push past the drag force.

BlackZzzverrR [31]3 years ago
4 0
The answer would be c
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Give a turn signal for at least the last 100 feet before you make  your turn to let other drivers know what you are going to do.
Making turns, turning a corner may seem to be a simple operation, however many accidents or traffic crashes are caused by drivers who do not  turn correctly. 
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3 years ago
Crust describes the outermost shell of a terrestrial planet. Earth’s crust is relatively thin, just 40-kilometers (25-miles) dee
Anni [7]

Answer:

"Crust" refers to a

terrestrial planet's outermost surface.

In general, the Earth's crust is divided into

older, thicker continental crust and younger, denser oceanic crust.

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The thin, 40-kilometer (25-mile) deep crust of our planet — just

1 per cent of Earth's mass — contains all known universe existence.

Explanation:

Continental crust is thicker, 22 miles (35 km) on average and less dense than oceanic crust, which accounts for its mean surface elevation of about 3 miles (4.8 km) above that of the ocean floor (Archimedes’ principle). Continental crust is more complex than oceanic crust…

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3 years ago
3. A ball is thrown straight up with an initial velocity of 40 m/s.
grandymaker [24]

Answer:

The velocity at the top of its path will be zero (0)

Explanation:

We can solve this problem or particular situation using the principle of energy conservation.

Which tells us that energy is transformed from kinetic energy to potential energy and vice versa. A reference point should be considered at which the potential energy is zero, and at this point the initial velocity of 40 [m/s] is printed to the ball.

Ek=Ep\\where:\\Ek=kinetic energy [J]\\Ep=potencial energy [J]

The potential energy is determined by:

Ep=m*g*h\\where:\\m=mass of the ball[kg}\\g=gravity[m/s^2]\\h=heigth [m]\\

The kinetic energy is determined by:

Ek=\frac{1}{2}*m*v_{0} ^{2}  \\where\\v_{0} = initial velocity[m/s]

Ek=Ep\\\frac{1}{2} *m*v_{0} ^{2} =m*9.81*h\\h=\frac{40^{2}}{2*9.81} \\h=81.5[m]

This will be the maximum path but, its velocity at this point will be zero. Because now all the kinetic energy has been transformed in potential energy.

8 0
3 years ago
Help its due in 2 hours
mars1129 [50]

Answer:

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Explanation:

5 0
2 years ago
An iron anchor of density 7810.00 kg/m^3 appears 252 N lighter in water than in air. (a) What is the volume of the anchor?(b) Ho
RSB [31]

Answer:

(a)The volume of the iron anchor = 25.2 m³

<em>(b)The mass of iron = 196812 kg</em>

Explanation:

<em>Density:</em> This is the ratio of the mass of a body to its volume. The S.I unit of density is <em>kg/m³</em>

(a)

From Archimedes principle, the iron will displace a volume of water that is equal to its volume. And the weight of water displaced is equal to loss in weight or upthrust.

Therefore, Upthrust = lost in weight = weight of water displace.

Therefore, Volume of the iron = mass of water displace/density of water

Vi = m₁/D₁........................... Equation 1

Where Vi = volume of iron, m₁ = mass of water displaced, D₁ = Density of water.

<em>Given: upthrust = 252 N, ∴ m₁ = 252/10 = 25.2 kg.</em>

<em>Constant: D₁ = 1.0 kg/m³</em>

<em>Substituting these values into equation 1,</em>

Vi = 25.2/1.0

Vi = 25.2 m³

Therefore the volume of the iron anchor = 25.2 m³

(b)

<em>Density of the iron = mass of the iron/volume of the iron.</em>

<em>Therefore, Mass of the iron = Density of the iron × volume of the iron...........................................equation 2</em>

<em>Given: Density of the iron = 7810 kg/m³, Volume of the iron =  25.2 m³</em>

<em>Substituting these values into equation 2,</em>

<em>Mass of the iron = 7810×25.2</em>

<em>Mass of the iron  = 196812 kg.</em>

<em>Therefore the mass of iron = 196812 kg</em>

8 0
3 years ago
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