What the hell is going on with acceleration

What is the body of the option? Is it a linear motion with uniform variable speed?

If yes. Then option 1 is incorrect, and the direction of acceleration is also considered.

Option 2 is correct, option 3 is also correct (premise, acceleration is not 0) Note: Velocity and acceleration are vectors, with magnitude and direction, and synthesis and decomposition follow the parallelogram rule. When analyzing a problem, don't forget to think about the direction.

The amount of velocity change also takes into account the direction of the initial velocity and the end velocity, and the amount of velocity change is also directional.

Acceleration is a vector that characterizes the degree of change in velocity per unit of time. In general, acceleration is an instantaneous concept, and its common units are meter seconds, meter seconds, and so on.

In the simplest uniform acceleration linear motion, the magnitude of the acceleration is equal to the increment of velocity per unit of time. If the velocity v1 of the moving point becomes v2 after t seconds, its acceleration can be expressed as:

When the moving point q is used for general space motion, the ratio of the change in the velocity vector to the elapsed time t is called the average acceleration in time t (Fig. 1) and is denoted as a flat

When the time interval t is approaching zero, the limit of the average acceleration is called the instantaneous acceleration (Fig. 1), which is referred to as acceleration and denoted as a:

Thus the acceleration is strictly defined as the acceleration vector equal to the temporal derivative of the velocity vector, which is oriented along the tangent of the velocity diagram and towards the concave side of the trajectory. For the causes of acceleration, see Newton's laws of motion.

1. Definition: The ratio of the amount of change in velocity to the time it takes to bend in the event of the change of the bulk object.

2. Formula: Acceleration is equal to the amount of change in velocity divided by the time taken for this change.

3. Unit: meters per square second.

4. Acceleration is a vector quantity, which has both magnitude and direction. The magnitude of the acceleration is equal to the increase in velocity per unit of time; The direction of acceleration is always the same as the direction of change in velocity. In particular, in linear motion, if the velocity increases, the direction of acceleration is the same as the velocity; If the velocity decreases, the direction of acceleration is opposite to the velocity.

Coriolis acceleration is due to the interaction of implicated motion with relative motion.

The magnitude of the Coriolis acceleration can be determined by ak=2 vrsin; The direction is determined by the vector product of the angular velocity vector of the reference motion system and the relative motion velocity vector of the moving point.

The magnitude of the acceleration is equal to the amount of change in velocity per unit of time; The direction of acceleration is always the same as the direction of the change in velocity δv.

Acceleration is equal to the first derivative of time with respect to velocity and is equal to the second derivative of displacement with respect to time.

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 quickly an object's velocity changes, usually expressed in a and in m s2. Acceleration is a vector quantity, and its direction is the direction of the change (quantity) of the velocity of the object, which is the same as the direction of the resultant external force.

An image of the acceleration with 1 m, (when the balance friction is too large and the balance friction is insufficient) is as follows: <>

Acceleration is the ratio of the amount of change in velocity to the time it takes for that change to occur. It is a physical quantity that describes the speed change of an object, usually expressed in a, the unit is meters per square second, acceleration is a vector, its direction is the same as the direction of the resultant external force, its direction indicates the direction of the change in velocity, and its magnitude indicates the magnitude of the change in velocity. The acceleration is different in various places on the earth.

Newton's second law of kinematics states that a = f m, where f is the resultant external force on the object and m is the mass of the object. Force is the condition that changes the state of motion of an object, while acceleration is a physical quantity that describes the state of motion of an object. Acceleration is not necessarily related to velocity, when the acceleration is large, the velocity can be small, and when the velocity is large, the acceleration can also be small.

From a differential point of view, acceleration is the velocity versus time derivative, which is the slope in the vt image. When the acceleration and velocity direction are in the same straight line, the object moves in a linear motion with variable speed, such as a car starting with constant acceleration (uniform acceleration linear motion), simple harmonic vibration (variable acceleration linear motion); When the acceleration and velocity direction are not in the same straight line, the object moves in a variable speed curve, such as flat throwing motion (uniform acceleration curve motion), uniform circular motion (variable acceleration curve motion); When the acceleration is zero, the object is at rest or moving in a straight line at a uniform speed. Any complex motion can be seen as a synthesis of countless uniform linear motions and uniformly accelerated motions.

Learning Methods and Skills of Acceleration (2) in Chapter 1, Chapter 1, Section 5 of Senior Secondary Physics Compulsory Course 1.

Acceleration, according to the description in high school textbooks, acceleration is "a physical quantity that describes the speed of an object that changes quickly", and the standard unit is "meters per square second", and 1 meter per square second means that the speed of an object increases by 1 meter per second in one second.

Increments in speed per unit of time! His historical origin is that he is an external force!

Acceleration is the ratio of the amount of change in velocity to the time it takes for this change to occur, expressed in a, in meters per square second, acceleration is a vector, its direction is the same as the direction of the resultant external force, and it is a vector that describes how fast or slow the speed of an object changes.

Acceleration: The rate of change of velocity per unit of time.

Application: In variable speed motion, the final velocity (V) and the initial velocity (Vo) are the rate of change of the velocity (if the positive value is the accelerated motion; is a deceleration motion when it is negative), the time taken to change the velocity (t), and the acceleration is: a=(v-vo) t.

What is the role of acceleration problems: study the relationship between the motion state of an object and the velocity, time, acceleration, and distance when moving at variable speeds.