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
ankoles [38]
2 years ago
14

4) A cannon shoots a cannonball of mass 5kg vertically upward from the mouth of a cannon with muzzle velocity of 7 m/s. At a hei

ght of 25 m above the mouth of the cannon, the cannonball attaches to another mass (1kg) and they continue to travel up. What is the maximum height that both masses will reach?

Physics
1 answer:
Ad libitum [116K]2 years ago
5 0

Answer:

h =220 m

Explanation:

Given that

u = 7 m/s

Even mass will attach but this will not produce any effect on the maximum height of the ball.Because in energy conservation the effect of mass does not present.

So the final speed of the ball will be zero at the maximum height.

v² = u² - 2 g (25 + h)

0 = 7² - 2 x 10 (25 +h)

49 = 20 ( 25 +h)

49 = 500 +20 h

Here h comes out negative that is why we are taking the 70 m/s in place of 7 m/s.

0 = 70² - 2 x 10 (25 +h)         ( take g =10 m/s²)

4900 = 20 ( 25 +h)

4900 = 500 +20 h

4900- 500 = 20 h

4400 = 20 h

440 = 2 h

h =220 m

You might be interested in
Why smartphone and computer are called modern technology?​
topjm [15]

Answer:

Hey

I am sure from what i know that your answer should be the following:

Modern technology is deeply tied to efficiancy and speed. Think of the knew 5G network it gives us very fast internet, or perhaps our very nessisitys such as our phone or cumputer. On a phone you have so much (thats to say you can acces alot easly); pictures videos dictionarys video games etc etc.

6 0
2 years ago
Help me!!!!!!!!!!!!!!!!!!!!!!!
Gemiola [76]

Answer:a computer , machine forcery,0,push

Explanation:

8 0
2 years ago
Rock at the top of a 20 m tall hill the rock has a mass of 10 kg how much potential energy does it have
Blizzard [7]
PE = 10 * 10 * 20 = 2000 Joule
6 0
3 years ago
Read 2 more answers
What are two ways an engineer can build a car in order for it to accelerate faster
Ket [755]

Explanation:

Take F=ma

a = F/m

For a higher, F higher or m lower

Means higher horse power for engine or lower mass for the car

4 0
2 years ago
Explain how a book can have energy even if it is not moving.
frutty [35]
Can something have energy even if it's not moving?
All moving objects have kinetic energy. When an object is in motion, it changes its position by moving in a direction: up, down, forward, or backward. ... Potential energy is stored energy. Even when an object is sitting still, it has energy stored inside that can be turned into kinetic energy (motion).


Does a book at rest have energy?
A World Civilization book at rest on the top shelf of a locker possesses mechanical energy due to its vertical position above the ground (gravitational potential energy).



Does a book lying on a table have energy?
The book lying on a desk has potential energy; the book falling off a desk has kinetic energy.
5 0
2 years ago
Other questions:
  • A force gives a 5.0 kg object an acceleration of 2.0 m/s 2. The same force would give a 20 kg object an acceleration of _____. 0
    7·2 answers
  • In your own words, explain what non-contact forces are.
    14·1 answer
  • Some plants disperse their seeds when the fruit splits and contracts, propelling the seeds through the air. The trajectory of th
    14·2 answers
  • How many (whole number of) 91 kg people
    15·2 answers
  • If you were looking for a metalloid on the periodic table,the best place to look would be?
    6·1 answer
  • Both retinal disparity and convergence increase as an object gets closer to the individual.
    5·2 answers
  • Carbon-14 has a half life of 5730 years. Consider a sample of fossilized wood that when alive would have contained 24g of C-14 i
    14·1 answer
  • Suggest why natural gas from different countries has a different percentage to hydrocarbons
    14·1 answer
  • A bobsled has a momentum of 4000 kg•m/s to the south. Friction on the
    5·1 answer
  • Find the mass of a 4 N stone.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!