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
Ksenya-84 [330]
3 years ago
9

Sam is pulling a box up to the second story of his apartment via a string. The box weighs 16.5 kg and starts from rest on the gr

ound. Sam is pulling so that the velocity of the box is increasing by 2.6 m/s every second.
How long until the box reaches a height of 13.2 m?
Physics
1 answer:
Katyanochek1 [597]3 years ago
8 0

Answer:

Weight (mass) = 16.5 kg

velocity = 0 m/a

acceleration =2.6 m/s^2

displacement = 13.2m

now,

acceleration = velocity/ time

2.6 = 0 / t

t = o / 2.6

t = o

You might be interested in
I don’t know how to answer this question? Can anyone help?
VMariaS [17]

Answer:

F=ma

here F is force, m is mass and a is accelaration,

According to the question,

F=3*F= 3F

m= 1/3 of m= m/3

a= ?

so the equation becomes,

3F= m/3*a

3F*3= ma

9F=ma

F= ma/9

Therefore accelaration reduces by 1/9.

I am not very sure.

7 0
3 years ago
Nine steps for developing scientific principles are
xxTIMURxx [149]

Answer:

1)Observe a phenomenon

2)Ask a question/ start inferring

3)Form a hypothesis

4)Create an experiment

5)Collect data

6)Compare results

7)Analyze

8)Report findings

9)Compare with other experiments

7 0
3 years ago
A wave has a frequency of 655 he And is traveling at 455m/sec. what is the wavelength
Vlada [557]

Answer:

v=wavelength ×f

wavelength=v/f=455/655=0.694m

3 0
3 years ago
An increase in the magnitude of velocity is??
bazaltina [42]
It means the speed of the object is increasing
and
there is a positive acceleration in the direction of the velocity
hence
there is a force acting on the object, in the direction of the velocity
8 0
3 years ago
Why is warm up important?
atroni [7]
Because it stretches and makes your muscles ready for the activity
5 0
3 years ago
Read 2 more answers
Other questions:
  • Is it true the atoms in sulphur liquid are the same as the atoms in solid sulphur?
    7·1 answer
  • Two trucks have the same velocity but different masses. Truck 1 has a mass of 200kg and truck 2 has a mass of 500kg . Which truc
    6·1 answer
  • Is 2.5m/s faster than 4m/s
    5·1 answer
  • If the Sun suddenly turned off, we would not know it until its light stopped coming. How long would that be, given that the Sun
    10·1 answer
  • Atomic physicists usually ignore the effect of gravity within an atom. To see why, we may calculate and compare the magnitude of
    15·1 answer
  • Adding a best-fit line to the scatter plot shown below would be an example of _____.
    5·2 answers
  • Block A is also connected to a horizontally-mounted spring with a spring constant of 281 J/m2. What is the angular frequency (in
    11·1 answer
  • Explain the method to measure the external diameter of a sphere
    11·1 answer
  • Please help me with this review question.
    11·1 answer
  • The safest way to view an image of the sun is to use.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!