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
zepelin [54]
3 years ago
10

A ball thrown straight up takes 1.89s to reach a height of 41.6m.

Physics
1 answer:
yulyashka [42]3 years ago
8 0

Answer:

Explanation:

average velocity is 41.6/1.89 = 22.0 m/s

initial velocity u is

22.0 = (u + u - 9.81(1.89))/2

44.0 = 2u - 18.5

62.56 = 2u

u = 31.3 m/s

max height is

v² = u² + 2as

s = (v² - u²) / 2a

s = (0² - 31.3²) / (2(-9.81)) = 49.9 m

49.9 = 41.6 = 8.27 m higher

In process numbers have been rounded to 3 s.d. for reporting purposes.

You might be interested in
A pilot can withstand an acceleration of up to 9g, which is about 88 m/s2, before blacking out. (a) What is the acceleration exp
givi [52]
Yes the plot dose make it with out baking out
7 0
3 years ago
A 9 m3 container is filled with 300 kg of r-134a at 10°c. what is the specific enthalpy (kj/kg) of the r-134a in the container?
andreev551 [17]
Given the mass of R-134a m = 300kg; Volume of the container V = 9  cu. meter; Temperature of R-134a T = 10 degrees Celsius; 
Formula of specific volume : v = V / m = 9 / 300 = 0.03 cu. m / kg. 
At T = 10 degrees Celsius from saturated R-134a tables, vf = 0.0007930 cu. m /kg; vg = 0.049403 cu. m/kg. We know v = vf + x (vg - vf), so 0.03 = 0.0007930 + x (0.049403 - 0.0007930), which makes x = 0.601.  
Specific enthalpy of R-134a in the container is h = hf + x*hfg = 65.43 + (0.601 * 190.73). Answer is 180.0587 kJ/kg
8 0
3 years ago
21/33
postnew [5]

Answer:

400N

Explanation:

5 0
3 years ago
How does a pedometer help people reach their fitness goals
goldfiish [28.3K]

how does a pedometer help people reach their fitness goals?

a. It measures calories burned.  

b. It usually doubles as an MP3 player and keeps people motivated.  

c. They count steps during a workout.  

d. They measure the number of lifts done per exercise.

8 0
3 years ago
Read 2 more answers
Find the velocity. 10 points. Will give brainliest!
BARSIC [14]

Answer:

6.060606...

Explanation:

To figure out velocity, you divide the distance by the time it takes to travel that same distance, then you add your direction to it. So the distance would be 1000m and the time would be 2 minutes and 45 seconds and if you convert the minutes into fractions you would get 165 seconds than you would divide 1000m by 165 seconds and you would get 6.060606... seconds as her average velocity

4 0
4 years ago
Other questions:
  • A cylindrical vessel with water is rotated about its vertical axis with a constant angular velocity co. Find:
    7·2 answers
  • Phileas Fogg, the character who went around the world in 80 days, was very fussy about his bathwater temperature. It had to be e
    8·1 answer
  • Which explanation describes the forces involved for a person to walk down the sidewalk?
    10·1 answer
  • Josh and Jake are both helping to build a brick wall which is 6 meters in height. They each lay 250 bricks, but Josh finishes th
    9·1 answer
  • The surveillance camera on a satellite at 250 km above the earth is taking pictures of the earth surface. Suppose that the imagi
    11·1 answer
  • Why do water molecules tend to stay together and hold their shape? Name and explain the phenomenon by which this happens
    14·1 answer
  • A football player kicks a ball with a mass of 0.5 kg. The average acceleration of the football was 15 m/s/s. How much force did
    15·1 answer
  • Help with both questions I’ll mark brainliest
    14·2 answers
  • An airplane moving horizontally at 150 m/s drops a package from an altitude is 490 m. How long does it
    9·1 answer
  • A relief plane flying horizontally at 65.0 m/s is delivering a
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!