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Bas_tet [7]
3 years ago
11

Which scenario involves acceleration?

Physics
1 answer:
Hatshy [7]3 years ago
4 0

Acceleration is caused when any force is applied to any moving object. This force can be an electric force, repulsion force, gravity, friction, etc .

And, force = mass x acceleration

This is the relationship between the force applied, the mass of the body on which force is applied and the acceleration.

Acceleration is applied to moving objects only because, as velocity = distance/time. Similarly, acceleration = velocity/time


You might be interested in
The acceleration of gravity at the surface of Moon is 1.6 m/s2 . A 5.0 kg stone thrown upward on Moon reaches a height of 20 m.
kramer

Answer:

(a) 8 m/s

(b) 5 s

Explanation:

(a)

Using,

V² = U²+2gh ......................... Equation 1

Where V = final velocity, U = Initial velocity, g = acceleration due to gravity on the surface of the moon, h = height reached.

Given: V = 0 m/s ( At it's maximum height), g = -1.6 m/s² ( as its moves against gravity), h = 20 m.

Substitute into equation 1

0 = U²+[2×20×(-1.6)]

-U² = - 64

U² = 64

U = √64

U = 8 m/s.

(b)

V = U +gt.................... Equation 2

Where t = time to reach the maximum height.

Given: V = 0 m/s ( At the maximum height), g = -1.6 m/s² ( Moving against gravity), U = 8 m/s.

Substitute into equation 2

0 = 8+(-1.6t)

-8 = -1.6t

-1.6t = -8

t = -8/-1.6

t = 5 s.

5 0
3 years ago
A rod of length L is pivoted about its left end and has a force F applied perpendicular to the other end. The force F is now rem
timurjin [86]

Answer:

F' = 4F

Explanation:

When force applied to the end of the rod in perpendicular direction then net torque on the rod is given as

\tau = L F sin90

\tau = LF

Now another force is applied at mid point of the rod at an angle of 30 degree with the rod

so new value of torque is given as

\tau = \frac{L}{2}F' sin\theta

LF = \frac{L}{2}F' sin30

LF = \frac{F'L}{4}

so we have

F' = 4F

3 0
3 years ago
Which statement regarding the “Evaporation” lab is most accurate?
Sladkaya [172]
Substances evaporate at different rates
4 0
4 years ago
Read 2 more answers
Ordinarily, material presented ________ is usually the most difficult to remember due to interference
Brums [2.3K]

Memorizing items on a list are enabled by the effects of primacy and

recency.

Ordinarily, material presented <u>in the middle of a list </u> is usually the most

difficult to remember due to interference.

Reasons:

When memorizing a list of items, due to the primacy effect, the information

at the beginning of the list are given importance, in the brain, due to their

many attributes, which may be due to them being;

  • The first item
  • Definition of the task (assignment of importance level)
  • Idea of what to expect (preparation of the mind)

Also the last items on the list are recalled by the effect known as recency,

which is probably due to the tendency to store items in the short term

memory.

Therefore, in the course of memorizing a list,  the first items on the list can

be stored in the long-term memory. The items that comes last in the

list are stored in the short-term memory, while the material presented in

the middle of the list are not allocated to a storage, and are usually

the most difficult to remember due to interference, by other items that

tend to come up during the retrieval process, from the long-term memory.

<em>(Rearranging the list can aid total recall)</em>

<em />

<em />

Learn more here:

brainly.com/question/15180534

<em>The possible question options as obtained from a similar question online, are;</em>

  • <em>At the beginning</em>
  • <em>Last</em>
  • <em>At the end</em>
  • <em>In the middle of a list</em>
5 0
2 years ago
Coulomb’s Law explains which of the following
Travka [436]
The force of attraction or repulsion between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them and acts along the line joining the two charges . F=k Q1Q2/r^2
5 0
3 years ago
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