Answer:
14. D
15. It is showing a magnet pushing against itself and everything around with tremendous force.
16. D, because of how many forcefields in that area.
17. It is showing (both) that they are attracting and repealing.
18. I’m not sure sorry :(
Explanation:
hope this helped!
Answer:
Equal
Explanation:
The impulse theorem states that the impulse exerted on each cart is equal to the change in momentum of the cart:
where
I is the impulse
pf is the final momentum
pi is the initial momentum
The impulse is equal to the product between the force applied and the contact time:
In this case, the force applied to the two carts (F) is the same, and the contact time (
) is the same as well. Therefore, the impulse exerted on the two carts is the same.
Moreover, the initial momentum of the two carts is also the same (zero, because they start from rest: 
). So the formula becomes
And since I is the same for the two carts, the final momentum (
) will also be equal.
After 5 seconds, the person would have travel 75 m
<h3>What is acceleration? </h3>
This is defined as the rate of change of velocity which time. It is expressed as
a = (v – u) / t
Where
- a is the acceleration
- v is the final velocity
- u is the initial velocity
- t is the time
<h3>How to determine the final velocity</h3>
We'll begin by obtaining the final velocity of the person. This can be obtained as follow:
- Initial velocity (u) = 10 m/s
- Acceleration (a) = 2 m/s²
- Time (t) = 5 s
- Final velocity (v) = ?
a = (v – u) / t
2 = (v – 10) / 5
Cross multiply
v – 10 = 2 × 5
v – 10 = 10
Collect like terms
v = 10 + 10
v = 20 m/s
<h3>How to determine the distance travelled</h3>
The distance travelled can be obtained as follow:
- Initial velocity (u) = 10 m/s
- Final velocity (v) = 20 m/s
- Acceleration (a) = 2 m/s²
- Distance (s) = ?
v² = u² + 2as
Collect like terms
2as = v² - u²
Divide both sides by 2a
s = (v² - u²) / 2a
s = (20² - 10²) / (2 × 2)
s = 75 m
Thus, the distance travelled by the person is 75 m
Learn more about velocity:
brainly.com/question/3411682
Learn more about acceleration:
brainly.com/question/491732
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Answer:
V = 31.17km/h
Explanation:
The average velocity is given by:
where d is the same distance traveled by the first submarine and t is the the same amout of time that it took.
d = 500km + 500km + 500km+ 500km = 2000km
t = t1 + t2 + t3 + t4
where
So, t = 25 + 12.5 + 16.67 + 10 = 64.17h
And finally:
Answer:
neutral charge ______________
