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Vedmedyk [2.9K]
3 years ago
8

A small compact car collides with a sticks to a very large SUV. Which statement about the momentum involved in the collision is

correct?
A)
The momentum of the car and the momentum of the truck are each conserved.

B)
The momentum of the car is conserved.

C)
The momentum of the car-truck system is conserved, but the momentum of each one separately is not conserved.

D)
The momentum of the truck is conserved.

E)
The car and the truck must undergo the same change in speed.
Physics
1 answer:
Darina [25.2K]3 years ago
8 0

Answer:A

Explanation:Actually it’s no A i actually don’t know it, I’m just doing this because I have to do it.

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_ is the name given to the heat energy received from the sun
Travka [436]

Answer:

The think the answer is solar radiation.

Explanation:

here, we gain the heat from the sun through a radiation. When it travels from the sun the harmful radiation are absorbed by ozone layer and heat enegry is provided to the surface of the Earth.

<em>hope</em><em> </em><em>it helps</em><em>.</em><em>.</em>

6 0
4 years ago
A bug is moving along a meter stick in the negative direction at a constant speed of 0.85cm/s. After 42 seconds have passed the
Agata [3.3K]

Given that,

bug speed, v= 0.85 m/s

time, t =42 s

Final position of bug on meter stick was 27 cm

Starting position of bug on meter stick = ?

Since we know that,

s = vt

s= 0.85*42 = 35.7 cm

this is the distance covered by bug in the given time and velocity.

since the bug is moving in negative direction, starting point will be:

27.0 cm+ 35.7 cm = 62.7 cm

The bugs starting position on meter stick was 62.7 cm.

3 0
3 years ago
A barge floating in fresh water (p = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A = 550 m2 and height H
Karolina [17]

Answer:

a) \Delta m = 330000\,kg, b) h = 1.268\,m

Explanation:

a) According the Archimedes' Principle, the buoyancy force is equal to the displaced weight of surrounding liquid. The mass of the coal in the barge is:

\Delta m \cdot g = \rho_{w}\cdot g \cdot \Delta V

\Delta m = \rho_{w}\cdot \Delta V

\Delta m = \left(1000\,\frac{kg}{m^{3}} \right)\cdot (550\,m^{2})\cdot (1.05\,m-0.45\,m)

\Delta m = 330000\,kg

b) The submersion height is found by using the equation derived previously:

\Delta m = \rho_{w}\cdot \Delta V

450000\,kg = \left(1000\,\frac{kg}{m^{3}}\right)\cdot (550\,m^{2})\cdot (h-0.45\,m)

The final submersion height is:

h = 1.268\,m

4 0
3 years ago
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Which two layers make up the Earth's upper mantle?
Bad White [126]

Answer: The lithosphere and the asthenosphere

4 0
3 years ago
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Josie is running her first cross country meet. The race is a distance of 5 km and she has set a goal to finish the race in 21 mi
frutty [35]

Answer:

3.97 m/s

Explanation:

Speed is defined as the distance covered per unit time. Therefore, s=d÷t=d/t

Where d is distance and t is time

Given distance of 5 km and time of 21 minutes the speed would be given by dividing 5 km by 21 min. However, speed is expressed as km/h or m/s or miles per hour etc. So we nees to get our speed in one of these standard units.

Going for m/s

Conversion

1 km has 1000m hence

5 km=5*1000=5000m

1 min has 60 seconds hence

21 min=21*60=1260 s

Speed=5000m÷1260s=3.9682539682538 m/s

Rounded off, s=3.97 m/s

8 0
3 years ago
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