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
kompoz [17]
3 years ago
13

What do you mean by negative acceleration? can an accelerating automobile starting from rest have a negative acceleration

Physics
1 answer:
Irina-Kira [14]3 years ago
4 0

Explanation:

The acceleration tells us how the speed changes per unit of time. If we say a body has a negative acceleration we are saying that its speed decreases over time.

If a body has a positive initial velocity and a negative acceleration: the velocity decreases. On the contrary, if the automobile has a negative initial velocity (in the opposite direction) and a negative acceleration: the velocity is increasing. Thus, an accelerating automobile starting from rest can have a negative acceleration.

You might be interested in
Two blocks are connected as shown in the diagram below. Assume that the ramp is frictionless. Draw the force diagram for the blo
cluponka [151]

Answer:

diagram: see image, x-component: 84.3 N, acceleration: 4.38 m/s^2

Explanation:

(see image for further explanation)

5 0
3 years ago
Soil formation involves both
Softa [21]
The process of soil formation involves the following steps: Accumulation of materials, leaching and losses (because of weather factors particles are leached and eroded away or taken up from the soil by plants), Transformation and illluviation (the chemical weathering<span> of silt, sand, and the formation of clay minerals as well as the change of organic materials into decay resistant organic matter), p</span>odsolisation and translocations (strong acidic solutions breakdown the clay minerals). From the given options soil formation involves both <span>physical and chemical weathering of rocks. Correct answer:D</span>
6 0
3 years ago
Two tuning forks of frequency 480 hz and 484 hz are struck simultaneously. what is the beat frequency resulting from the two sou
umka21 [38]
Ans: Beat frequency = f_b = 4Hz

Explanation: 
The beat frequency is equal to the absolute value of the difference in frequency of the two waves. In other words, the number of beats per second is equal to the difference in frequency. It is due to the destructive and constructive interference. <span>According to this interference, sound will be soft or loud.

Hence. the formula is:
</span>Beat frequency = f_b = |f_2 - f_1|
<span>
Since,
</span>f_1 = 480Hz
f_2 = 484Hz

Therefore,
Beat frequency = f_b = |484 - 480|

=> Beat frequency = f_b = 4Hz
-i
7 0
3 years ago
Write down the principle of lever? <br>= ????​
Ipatiy [6.2K]
The principle of a lever is when two equal forces act in opposite directions and ultimately come to a state of equilibrium if distanced properly

i hope that helps?^
7 0
2 years ago
Does anyone know how to solve this?
FromTheMoon [43]
Yes. There is a substantial number of people ... members of Brainly as well as non-members ... students, puzzle solvers, and just average educated thinkers, who would be able to solve it.
7 0
3 years ago
Other questions:
  • Everything we know about stars comes from studying their _____.
    15·2 answers
  • Three kilograms of argon (Ar) changes from an initial volume and a temperature of 298K to (a) four times the volume and a temper
    10·1 answer
  • A boy rubs two balloons against his sweater. One balloon acquires a charge of 3.0 E -6 C. The other balloon acquires a charge of
    6·1 answer
  • Oceans experience very small temperature changes causing nearby areas to
    14·1 answer
  • 23°C = ______ K<br> 23<br> 296<br> -250<br> 123
    6·1 answer
  • A 10,000 N piano is dropped from the top of a building. When the piano reaches terminal speed…
    6·1 answer
  • Hi there! I'm not quite sure on how to solve this....
    10·2 answers
  • Let's say you cut open a log of wood with an axe, what type of simple machine are you using? Does it matter how sharp it is?
    14·2 answers
  • Question 3. A wire 25.0cm long lies along the z-axis and carries a current of 9.00A in the +z-direction. The a magnetic field is
    10·1 answer
  • If you know all of the forces acting on a moving object, can you tell in which direction the object is moving? if the answer is
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!