Answer: initially the packet was ascending up with the balloon.
Taking upward as positive direction;
initial velocity, u = 4.9 m/s
final velocity = v m/s
initial height, h₁ = 245 m
final height, h₂ = 0
a = -9.8 m/s²
time taken = t seconds
s = ut + 0.5at²
⇒ (h₂-h₁) = ut + 0.5at²
⇒ 0-245 = 4.9t + 0.5×(-9.8)×t²
⇒ -245 = 4.9t - 4.9t²
⇒ 4.9t² -4.9t -245 =0
Solving it, we get t = 7.59s
v = u + at = 4.9 -9.8×7.59 = 4.9 - 74.38 = -69.48 m/s
So velocity is 69.48 m/s downward
Explanation:
Hence, 0.60+2.25eV is the solution to this problem
Answer:
8451.62109367671 Newtons
Explanation:
It is known that
So,
The force in Newtons is 8451.6210936765 Newtons
Answer:
1) when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water
2) sulfur dioxide and nitrogen oxides
3)mixtures of sodium bicarbonate,magnesium hydroxide, calcium carbonate
4)
A) sulfuric acid
B) calcium ammonium nitrate
C) calcimine, kalsomine, calsomine, or lime paint
D) ammonium hydroxide
5)
A) Na2SO4 + H2O
B) NaCl + H2O + CO2
6) I can't find anything to help with the answers
7)
A) Can't find any thing
B) copper oxide
