1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
4vir4ik [10]
3 years ago
11

Will mark as BRAINLIEST.....

Physics
1 answer:
tigry1 [53]3 years ago
7 0

Answer:

Explanation:

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 = 100 m  

final height, h₂ = 0

a = -9.8 m/s²

time taken = t seconds

Considering the second equation of motion.

S = ut + 1/2at^2

s = ut + 0.5at²

(h₂-h₁) = ut + 0.5at²

0- 100 = 4.9t + 0.5×(-9.8)×t²

-100 = 4.9t - 4.9t²

4.9t² -4.9t -  100 =0

t² -t - 20.41 = 0

Using : b±√(b²-4ac))/(2a)....  1

Where a =1, b = -1 c =-20.408

Substituting the values into equation 1

Solving it, we get  t = 5.045s

v = u + at = 4.9 -9.8×5.045 = 4.9 - 49.44 = -44.54 m/s

The final velocity is -44.54 m/s, and it took  5.045s to reach the ground.

You might be interested in
A boy got out of a boat and as he
emmainna [20.7K]

Answer:

third law of motion

Explanation:

6 0
3 years ago
Which type of energy is stored in chemical compounds and released in chemical reactions?
astraxan [27]

Answer:

potential

Explanation:

4 0
3 years ago
Do the following calculation and express the final answer in
sammy [17]

Answer:

Explanation:

I got the same thing. So, i don't know but good luck

3 0
1 year ago
Where would you find the lowest-density seawater?
PolarNik [594]
In rivers that are close to sea
4 0
3 years ago
HELPP WILL MARK BRAINLIEST!!!
guapka [62]
I guess it’s B cause that maybe is the output
3 0
3 years ago
Read 2 more answers
Other questions:
  • Akito pushes a wheelbarrow with 800 W of power. How much work is required to get the wheelbarrow across the yard in 12 s? Round
    7·2 answers
  • Suppose that the sun shrank in size but that its mass remained the same. What would happen to the orbit of the earth?
    5·1 answer
  • What is the strongest interparticle force is each substance ch3cl?
    13·1 answer
  • How resistance, current, and voltage behave in a series circuit.?
    5·1 answer
  • What causes a roller coaster to "lose" energy and stop? What force does it lose energy to? Give a detailed explanation that is e
    6·1 answer
  • Which is not expecting acceleration?
    14·1 answer
  • The diameter of Earth (to two significant figures) is 7900 miles. Calculate its circumference.
    8·1 answer
  • Explain how columns can be used and set up to increase the effectiveness of business documents.
    14·1 answer
  • An airplane traveling from Atlanta to New York travels 1,395 km in 2.5 h. What is the plane’s average speed?
    8·1 answer
  • 6. A car moving in a straight line at constant speed:
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!