Quick Answer: What Does The Acceleration Depend On?

Why retardation is called negative acceleration?

Negative acceleration always indicates that the acceleration is in the direction opposite to that of the motion of the body.

Hence, negative acceleration (or retardation) always means that the body is slowing down..

Does the initial velocity affect acceleration?

Initial velocity is independent of the slope of the graph; that is, the acceleration. An object thrown downward still accelerates after release at the same rate as an object that is dropped.

Do heavier objects fall faster?

Galileo discovered that objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and brick dropped together. Air resistance causes the feather to fall more slowly.

How does force affect acceleration?

The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.

Can negative acceleration speed up?

An object with negative acceleration could be speeding up, and an object with positive acceleration could be slowing down. How is this so? Consider the fact that acceleration is a vector that points in the same direction as the change in velocity.

What is the difference between deceleration and decreasing acceleration?

Deceleration is negative acceleration, that is the motion is retarded. The velocity decreases with time. Whereas, decreasing acceleration implies that the magnitude of acceleration is decreasing but the value remains positive. The velocity keeps on increasing but the rate of increase of velocity decreases with time.

Would an elephant fall faster than a mouse?

The elephant encounters a smaller force of air resistance than the feather and therefore falls faster. The elephant has a greater acceleration of gravity than the feather and therefore falls faster. … Each object experiences the same amount of air resistance, yet the elephant experiences the greatest force of gravity.

Does mass affect acceleration?

Increasing force tends to increase acceleration while increasing mass tends to decrease acceleration. Thus, the greater force on more massive objects is offset by the inverse influence of greater mass. Subsequently, all objects free fall at the same rate of acceleration, regardless of their mass.

How does speed affect acceleration?

The direction of the acceleration determines whether an object will slow down, speed up, or turn. is in the same direction as the object is moving, the speed of the object increases. The car speeds up. acceleration is opposite to the motion, the speed of the object decreases.

Why does force equal mass times acceleration?

Newton’s second law is often stated as F=ma, which means the force (F) acting on an object is equal to the mass (m) of an object times its acceleration (a). This means the more mass an object has, the more force you need to accelerate it. And the greater the force, the greater the object’s acceleration.

What is the difference between acceleration and velocity?

Here are the basic definitions of velocity and acceleration: velocity – the rate of displacement of a moving object over time. acceleration – the rate of velocity change over time.

Does force increase with acceleration?

states that the acceleration of an object increases with increased force and decreases with increased mass. … Notice how mass and force affect acceleration. Newton’s second law. The acceleration of an object increases with increased force, decreases with increased mass, and is in the same direction as the force.

What is the difference between force and acceleration?

Direct and Inverse Relationships Newton’s second law shows that there is a direct relationship between force and acceleration. The greater the force that is applied to an object of a given mass, the more the object will accelerate. For example, doubling the force on the object doubles its acceleration.

What is acceleration always caused by?

Newton’s second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e., to change its velocity, at a constant rate. In the simplest case, a force applied to an object at rest causes it to accelerate in the direction of the force.

Does speed depend on direction?

Speed (s) – Rate at which an object is moving. Like distance, speed does not depend on direction.

What is the difference between acceleration and speed?

Speed is the rate of change of distance(basically how much distance(m) has been covered in a particular time(s)). Velocity is the rate of change of displacement( change of distance in a particular direction with respect to time) , and acceleration is the rate of change of velocity per unit of time.

What force is required to accelerate a body?

120 N is required to accelerate a body with a mass of 15 kilograms at a rate of 8 m/s2. This answer has been confirmed as correct and helpful.

How mass affects acceleration when force is constant?

It is summarized by the equation: Force (N) = mass (kg) × acceleration (m/s²). Thus, an object of constant mass accelerates in proportion to the force applied. If the same force is applied to two objects of differ- ent mass, the heavier object has less acceleration than the lighter object (Figure 1).

Does acceleration depend on speed?

That’s because acceleration depends on the change in velocity and velocity is a vector quantity — one with both magnitude and direction. … Acceleration occurs anytime an object’s speed increases or decreases, or it changes direction. Much like velocity, there are two kinds of acceleration: average and instantaneous.

What does free fall acceleration depend on?

Free Fall is the term that describes the acceleration of objects toward the Earth when dropped at rest. The acceleration of the falling object is due to the force of gravity between the object and the earth.

Does deceleration mean negative acceleration?

Deceleration always refers to acceleration in the direction opposite to the direction of the velocity. Deceleration always reduces speed. … Therefore, it has negative acceleration in our coordinate system, because its acceleration is toward the left.