They hit at the same time. Everything falls at the same rate.
By definition we have the momentum is:
P = m * v
Where,
m = mass
v = speed
Before the impact:
P1 = (0.048) * (26) = 1.248 kg * m / s
After the impact:
P2 = (0.048) * (- 17) = -0.816 Kg * m / s.
Then we have that deltaP is:
deltaP = P2-P1
deltaP = (- 0.816) - (1,248)
deltaP = -2,064 kg * m / s.
Then, by definition:
deltaP = F * delta t
Clearing F:
F = (deltaP) / (delta t)
Substituting the values
F = (- 2.064) / (1/800) = - 1651.2N
answer:
the magnitude of the average force exerted on the superball by the sidewalk is 1651.2N
Group 0 - they are called the NOBLE GASES
(as they're very unreactive) because...
ALL of their atoms are full.
Example : Helium contains 2 electrons so it's outer shell is full
Answer:
oop false have a great day
Explanation:
i hope i helped u
The correct option is D.
Water conservation have to do with all the efforts that are made by individuals, government and organisations to ensure that water resources are well managed and preserved for present and future humans' use. The chip manufacturing company in the question given above can ensure water preservation by using non toxic chemicals that will not harm the aquatic environment where they will eventually discharge their wastes. And in case, the wastes of this company are buried, it can affect the water table of the community where the company is located if the wastes contain toxic materials.
