How does an object accelerate, and how do you find the acceleration of an object?

The synthesis and decomposition of motion refers to the synthesis and decomposition of the physical quantities that describe motion, i.e., displacement, velocity, and acceleration. The decomposition of motion is the inverse of motion synthesis, and the decomposition should be decomposed according to the actual effect of the motion or according to the orthogonal decomposition method. A velocity vector is decomposed into two velocities according to the vector algorithm, but if it does not match the actual situation, the scored velocity has no physical significance, so one of the basic principles of velocity decomposition is to decompose it according to the actual effect.

There are two commonly used thinking methods: one is to first virtualize a displacement of the motion, see what effect this displacement produces, and find a way to decompose the motion; Another method is to first determine the direction of the resultant velocity (here's a simple method: the actual direction of motion of the object is the direction of the resultant velocity) and then analyze the actual effect of this combined velocity to determine the direction of the two partial velocities.

1. For the movement of objects connected by non-extendable light ropes, because the elastic force of the rope is always along the direction of the rope, when the rope is not extensible, the projection of the speed of the rope and the object in the direction of the rope is equal. When solving the velocity correlation problem between the rope and the object, the velocity of the rope and the object should be clarified first, and then the velocity of the two objects should be decomposed along the direction of the rope and perpendicular to the direction of the rope respectively, so that the velocity of the two objects along the direction of the rope is equal. 2. When finding the velocity correlation problem of objects in contact with each other, it is necessary to first clarify the velocity of the two objects in contact, analyze the direction of the elastic force, and then decompose the velocity of the two objects along the direction of the elastic force and perpendicular to the direction of the elastic force respectively, so that the velocities of the two objects along the direction of the elastic force are equal.

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Let's talk about the situation on the same straight line.

According to Newton's first law, it can be known that an object will remain at rest or move in a uniform straight line when it is not subjected to force or equilibrium force. The resultant external force at this point is 0

If it is originally stationary, when the resultant external force is not 0, it will advance in the direction of the resultant external force, that is, it will accelerate in that direction;

If it is moving in a straight line at a uniform velocity, then in order to accelerate, the resultant external force must be in the same direction as the original direction to accelerate the object, and if it is the opposite, the velocity will decrease.

The key is that the resultant external force is not 0 and the direction is the same as the original velocity, and it will accelerate.

If it is a curvilinear motion, it is a little more troublesome, you have to consider the tangential and normal directions, and if you are a high school or less, you should understand the above first.

Acceleration is caused by an external force. Different forces – either constant or variable – cause different forms of acceleration. When the force is constant, the difference between adjacent displacements at equal time is constant. If you're asking a philosophical question, I'm sorry I can't explain it clearly.

Take linear motion as an example:

When the direction of force is the same as the direction of initial velocity, the acceleration is the same as the direction of velocity, and every second that passes, the change of velocity increases by a certain value on the basis of the original, and the velocity becomes faster and faster.

Acceleration a=(v-v0) t

Instantaneous velocity formula v=v0+at;

displacement formula x=vt+ at ;

Average velocity v=x t=(v0+v) 2

Export the formula v -v0 =2ax

The units are all SI units, i.e. a is in m s, x is m in m, and v is m s

The direction of the acceleration: the same direction as the velocity change v. The direction is the same as the resultant external force.

When the direction of acceleration is the same as the direction of velocity, the object moves at an accelerated pace;

When the direction of acceleration is opposite to the direction of velocity, the object moves in a deceleration motion.

That is: acceleration motion: v>0, ɑ>0 or v<0, ɑ<0 deceleration motion:

v>0,ɑ<0 or v>0,ɑ<0 Acceleration is the ratio of the amount of velocity change to the time it takes for this change to occur δv δt, which is a physical quantity that describes how fast or slow the velocity of an object changes, usually expressed in a, and the unit is m s2.

From the relationship between acceleration and time, it can be seen that acceleration varies uniformly with time.

The initial value is 3, when t=3s a is 9, and the average acceleration is 6m s 2 in 0-3 seconds

According to the formula: v=v0+a(average)t

5+6*3=23m s is obtained

Summary. Hello, dear, glad to answer for you. Acceleration is an important knowledge point in high school physics, and the following two methods are introduced to solve it.

Hello, dear, glad to answer for you. Acceleration is an important knowledge point in high school physics, and the following two methods are introduced to solve it.

Fellow, I really didn't understand, I can be more specific.

1.Using the formula: acceleration (a) = velocity change (δv) time interval (δt) = (v2-v1) (t1-t2).

The difference between the end velocity minus the initial velocity divided by the time interval between the two. Finally, the average acceleration is obtained. 2.

Find out the relevant variables. Acceleration over a period of time can be calculated based on the forward and backward velocity of an object (in a certain direction, at a certain rate).

Summary. Dear, glad to answer for you! Finding the Acceleration of an Object:

a=dv/dt。The magnitude of the acceleration is equal to the increment of velocity per unit of time. When the acceleration is zero, the object is at rest or moving in a straight line at a uniform speed (relative to the same frame of reference).

Any complex motion can be seen as a synthesis of countless uniform linear motions and uniformly accelerated motions. Acceleration can also be calculated from the change in velocity and time, but the factors that determine acceleration are the resultant force f experienced by the object and the mass m of the object.

Dear, glad to answer for you! Finding the acceleration of an object: a=dv dt.

The magnitude of the acceleration is equal to the increment of velocity per unit of time. When the acceleration is zero, the object is at rest or moving in a straight line at a uniform speed (relative to the same frame of reference). Any complex motion can be seen as a synthesis of countless uniform linear motions and uniformly accelerated motions.

Acceleration can also be calculated from the change in velocity and time, but the factors that determine acceleration are the resultant force f experienced by the object and the mass m of the object.

How to find this acceleration.

Extended Information: Acceleration Formula for Objects: Acceleration a = (v2-v1) divided by t in uniform acceleration linear motion.

The unit of acceleration is meters per square second, and the symbol is m s2 or m·s-2. A physical quantity that represents the speed of the change in the velocity of a particle. Acceleration can be calculated by the change in velocity and time, but the factors that determine acceleration are the resultant force f of the object and the mass m of the object.

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Acceleration is defined as: a=δv δt

Newton's second law: a=f m

It is found by the kinematic formula: a=(v-v0) t

a=2(x-v0)/t^2

a=(v^2-v0^2)/2x

It should be used flexibly and correctly in practice.

Please be prompt. If you have any questions, ask them separately. I will always help you.

Connecting the highest point and the lowest point of the canopy, according to x=1 2*a*t 22r=1 2*g*t 2 t=2 (r g) to connect the lowest point and any point on the circumference, assuming that the angle is a, the length of the inclined plane is 2rcosa, and the acceleration is a=gcosa

According to x=1 2*a*t 2

2rcosa=1/2*gcosa*t^2

t=2√(r/g)

Acceleration is a measure of the rate of change in the velocity of an object. In one-dimensional motion (in the direction of a straight line), the three basic formulas for acceleration are:

1.Acceleration Equation 1 (Definition Formula):

a = v / t

where a denotes acceleration, δv denotes the amount of change in velocity, and δt denotes the amount of change in time.

2.Acceleration Equation 2 (Initial Velocity and Final Combustion Impulse Velocity Formula):

a = v - u) /t

Where, a denotes acceleration, v denotes the final velocity of the object, u denotes the initial velocity of the object, and t denotes the time interval.

3.Acceleration Equation 3 (Displacement Formula):

a = 2s / t²

Where, A denotes acceleration, S denotes the displacement of the object, and T denotes the time interval.

These formulas can be used to calculate the acceleration of the hand body in one-dimensional motion, and it is only necessary to select the appropriate formula for calculation according to the specific situation.

When calculating the acceleration of an object, it can be done in the following detailed steps:

1.Identify known quantities: Start by identifying the known quantities given in the problem, including the force on the object and the mass of the object.

A force can be a single force or the resultant force of multiple forces, and they can be a ridge thickness known, given, or calculated from other physical quantities. Mass is usually measured in kilograms.

2.Determine Net Force: Calculate the vector sum of all known forces, i.e., the net force.

The net force is a key factor that determines the acceleration of an object. If only one force acts on an object, then the net force is the magnitude and direction of that force. If there are multiple forces acting on an object, then the net force can be found by summing their vectors.

3.Apply Newton's second law: According to Newton's second law f = ma, the net force and the mass of the object are substituted to solve the acceleration.

Make sure that the units of net force and mass are consistent, usually the unit of net force is Newton (n) and the unit of mass is kilogram (kg), and the resulting unit of acceleration will be meters per second squared (ms).

4.Check the results: Double-check that the values and units used in the calculation are correct and that there are no omissions or errors. Verify that the calculation results are as expected, and perform the necessary rounding or precision processing in Sakura.

It is important to note that the acceleration of an object is not necessarily constant, it may change over time. In some cases, the acceleration may be variable, requiring more complex analysis and calculations depending on the specifics of the problem. In addition, Newton's second law also needs to be considered when applying whether the mass of an object is constant, because in the case of a change in mass, more complex laws of physics need to be used to calculate.