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
tatuchka [14]
3 years ago
14

Acceleration occurs whenever an ___________________ force acts on an object.

Physics
2 answers:
leonid [27]3 years ago
8 0
Acceleration occurs whenever the forces on an object are unbalanced.

It's the group of forces on the object that's either balanced or unbalanced.
There's no such thing as "an unbalanced force".

Elina [12.6K]3 years ago
4 0
Acceleration is known to occur whenever an unbalanced force acts on an object.
You might be interested in
A 7 ft tall person is walking away from a 20 ft tall lamppost at a rate of 5 ft/sec. Assume the scenario can be modeled with rig
aleksandr82 [10.1K]

Answer:

The rate of change of the shadow length of a person is 2.692 ft/s

Solution:

As per the question:

Height of a person, H = 20 ft

Height of a person, h = 7 ft

Rate = 5 ft/s

Now,

From Fig.1:

b = person's distance from the lamp post

a = shadow length

Also, from the similarity of the triangles, we can write:

\frac{a + b}{20} = \frac{a}{7}

a = \frac{7}{13}b

Differentiating the above eqn w.r.t t:

\frac{da}{dt} = \frac{7}{13}.\frac{db}{dt}

Now, we know that:

Rate = \frac{db}{dt} = 5\ ft/s

Thus

\frac{da}{dt} = \frac{7}{13}.\times 5 = 2.692\ ft/s

5 0
3 years ago
A record player turntable initially rotating at 3313 rev/min is braked to a stop at a constant rotational acceleration. The turn
Rus_ich [418]

Answer:

(A) It will take 22 sec to come in rest

(b) Work done for coming in rest will be 0.2131 J              

Explanation:

We have given the player turntable initially rotating at speed of 33\frac{1}{3}rpm=33.333rpm=\frac{2\times 3.14\times 33.333}{60}=3.49rad/sec

Now speed is reduced by 75 %

So final speed \frac{3.49\times 75}{100}=2.6175rad/sec

Time t = 5.5 sec

From first equation of motion we know that '

\alpha =\frac{\omega -\omega _0}{t}=\frac{2.6175-3.49}{4}=-0.158rad/sec^2

(a) Now final velocity \omega =0rad/sec

So time t to come in rest  t=\frac{0-3.49}{-0.158}=22sec

(b) The work done in coming rest is given by

\frac{1}{2}I\left ( \omega ^2-\omega _0^2 \right )=\frac{1}{2}\times 0.035\times (0^2-3.49^2)=0.2131J

4 0
2 years ago
Can an ordinary object, like a motorcycle, be mass-less? Yes or No
Drupady [299]

Answer:

no.

Explanation:

because the mass of an object never changes.

4 0
3 years ago
The main energy source during exercise of low to moderate intensity is
zhannawk [14.2K]

Answer:

THUS,THE MAJOR SOURCES OF ENERGY DURING EXERCISE ARE CARBOHYDRATES AND FATS.

Explanation:

6 0
3 years ago
On a velocity time graph, the slope tells you the ______ of the object.
Paraphin [41]
The acceleration is the correct answer
7 0
3 years ago
Other questions:
  • A car traveled at a constant velocity of 70 mph from noon to 2:00 pm. At 3:00 pm the velocity of the car was 80 mph; and finally
    8·1 answer
  • What is the changing of the position of an object relative to a point of reference
    10·1 answer
  • Two adjacent natural frequencies of an organ pipe are found to be 550. Hz and 650. Hz. (a) Calculate the fundamental fre- quency
    15·1 answer
  • A force of 20N acts upon of 5 kg. Calculate the acceleration of the object.
    6·1 answer
  • What is the electric potential at the point on the x-axis where the electric field is zero?
    9·1 answer
  • Which of the following is a densit-independent factor
    7·1 answer
  • Compare the kinetic energies of a ball moving at 5 m/s to when it is moving
    5·1 answer
  • Please help San Jose to San Francisco is approximately 7200 meters away. If it takes you 3600 seconds to drive by car what is th
    14·2 answers
  • A flashlight converts?
    10·1 answer
  • Why do the lighter isotopes disappear first from the atmosphere? Where do those isotopes go?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!