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
Nutka1998 [239]
3 years ago
10

A ball is dropped from a window and takes two seconds to reach the ground .it starts from rest and reaches a final speed of 20m/

a .what is the balls acceleration?
Physics
1 answer:
Akimi4 [234]3 years ago
3 0
The ball can't reach the speed of 20 m/s in two seconds, unless you THROW it down from the window with a little bit of initial speed. If you just drop it, then the highest speed it can have after two seconds is 19.6 m/s .

If an object starts from rest and its speed after 2 seconds is 20 m/s, then its acceleration is 20/2 = 10 m/s^2 .

(Gravity on Earth is only 9.8 m/s^2.)
You might be interested in
Two carts (m1 = m2 = 0.400 kg) are placed on an aluminum track. The first cart is pushed with the initial velocity of 1.5 m/s to
zloy xaker [14]

Answer:

That's just if it's a Flexible collision

5 0
3 years ago
Which part of the steam engine does the work?
erik [133]

Imagine living off nothing but coal and water and still having enough energy to run at over 100 mph! That's exactly what a steam locomotive can do. Although these giant mechanical dinosaurs are now extinct from most of the world's railroads, steam technology lives on in people's hearts and locomotives like this still run as tourist attractions on many heritage railways.

Steam locomotives were powered by steam engines, and deserve to be remembered because they swept the world through the Industrial Revolution of the 18th and 19th centuries. Steam engines rank with cars, airplanes, telephones, radio, and television among the greatest inventions of all time. They are marvels of machinery and excellent examples of engineering, but under all that smoke and steam, how exactly do they work?

6 0
3 years ago
Read 2 more answers
Help Plaeseeeeeeee!
vladimir2022 [97]

Answer:

golf all on grass covered hill in sunlight

Explanation:

someone pouring/spinning top has a lot of motion going on. a roller coaster has force acting on it which increases the motion.

3 0
3 years ago
Read 2 more answers
A car travels 240km in 4h what’s the cars velocity
Tresset [83]

The car's speed is 240km/4hr= 60km/hr.

There's not enough information given in the question to determine its velocity.

6 0
3 years ago
Read 2 more answers
The formula used to find force is F=m*v.<br> true or false
zepelin [54]

It's true IF ' m ' stands for mass and ' v ' stands for acceleration. Otherwise it's false.

4 0
3 years ago
Other questions:
  • Give one example in which both physical and chemical changes takes places ​
    6·2 answers
  • A reaction where one element takes the place of another element in a compound is an example of which type of reaction?
    6·1 answer
  • Which mass would have the greatest acceleration if the same unbalanced force was applied to each?
    9·1 answer
  • Which of the following its a substance: table salt, seawater, or sand
    15·1 answer
  • A 1000kg automobile enters a freeway on-ramp at 20 m/s accelerates uniformly up to 40 m/s in a time of 10 seconds. How far does
    8·2 answers
  • What is a Newton unit? kg-m/sec2 m/sec m/sec2 m2/sec
    13·1 answer
  • Zeros between a decimal point and a non-zero number are <br> (blank) significant
    10·1 answer
  • Developing
    9·1 answer
  • 4. Name three examples of "concentrated" forms of energy.
    14·2 answers
  • A 60kg bike accelerates at 20 m/s^2. With what force was the person pedaling?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!