10.92N
Explanation:
Given parameters:
Mass of truck = 2.964kg
Velocity of truck = 7m/s
Time taken = 1.9s
Unknown:
Average force on the car = ?
Solution:
According to newton's third law of motion "action and reaction are equal and opposite".
The force with which the truck struck the fence is the same as the force the fence acted on the truck with but in another direction.
From newton's second law:
Force = mass x acceleration
We know that acceleration is the change in velocity with time;
acceleration =
Force = mass x
Force = = 10.92N
learn more:
Newton's laws brainly.com/question/11411375
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Answer:
Energy that is transformed is neither destroyed nor created.
Explanation:
the universe is infinite in extent and will expand forever.
On the basis of our current best estimate of the present mass density of the universe, astronomers think that the universe is infinite in extent and will expand forever.
<h3>What is the foundation for the proof that the cosmos is free to expansion?</h3>
The includes as evidence for the big bang.
1) The universe is expanding, as observed.
2) Independent proof of the omnipresent nature of microwave radiation throughout space.
3) The universe has an average temperature of 2.7 Kelvin.
<h3>Why is it so challenging to calculate the density of the universe?</h3>
- It denotes that the universe is "closed" and that its density exceeds the critical density.
- There is a lot of matter in the universe that does not emit much (or any) light.
<h3>What is true of the majority of the universe's mass?</h3>
- Around 27% of the universe's mass is made up of dark matter, compared to 5% made up of regular matter (protons, neutrons, electrons, neutrinos, etc.); dark matter is about 6 times more prevalent.
- The remaining 68% of the universe's total mass and energy is known as "dark energy."
To learn more about density of the universe visit:
brainly.com/question/4902544
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Answer:
I'm not Polish
Explanation:
I do not understand... why Poles visit websites only for us? Not, ok ....
how they can English
so I understand it this way ...(I mean the question asked)