Package org.djunits.quantity

Class Acceleration

java.lang.Object

java.lang.Number

org.djunits.quantity.def.Quantity<Acceleration>

org.djunits.quantity.Acceleration

All Implemented Interfaces:

Serializable, Comparable<Acceleration>, Additive<Acceleration>, Scalable<Acceleration>, Value<Acceleration>

public class Acceleration
extends Quantity<Acceleration>

Acceleration is the rate of change of velocity over time, measured in meters per second squared (m/s2).

Copyright (c) 2025-2026 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See for project information https://djunits.org. The DJUNITS project is distributed under a three-clause BSD-style license.

Author:

Alexander Verbraeck

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Acceleration.Unit	Acceleration.Unit encodes the units of acceleration.

Field Summary

Fields

Modifier and Type	Field	Description
static final Acceleration	NaN	Constant with value NaN.
static final Acceleration	NEG_MAXVALUE	Constant with value -MAX_VALUE.
static final Acceleration	NEGATIVE_INFINITY	Constant with value NEGATIVE_INFINITY.
static final Acceleration	ONE	Constant with value one.
static final Acceleration	POS_MAXVALUE	Constant with value MAX_VALUE.
static final Acceleration	POSITIVE_INFINITY	Constant with value POSITIVE_INFINITY.
static final Acceleration	ZERO	Constant with value zero.

Fields inherited from class org.djunits.quantity.def.Quantity

si

Constructor Summary

Constructors

Constructor	Description
Acceleration(double valueInUnit, Acceleration.Unit unit)	Instantiate a Acceleration quantity expressed in the given unit.
Acceleration(double value, Acceleration.Unit displayUnit, boolean useSi)	Instantiate a Acceleration quantity with an SI or base value and a display unit.

Method Summary

Modifier and Type	Method	Description
Dimensionless	divide(Acceleration v)	Calculate the division of Acceleration and Acceleration, which results in a Dimensionless scalar.
Speed	divide(Frequency v)	Calculate the division of Acceleration and Frequency, which results in a Speed scalar.
Frequency	divide(Speed v)	Calculate the division of Acceleration and Speed, which results in a Frequency scalar.
Acceleration.Unit	getDisplayUnit()	Retrieve the unit of this Value.
Acceleration	instantiateSi(double siValue, UnitInterface<Acceleration> displayUnit)	Instantiate a quantity with an SI or base value, and a display unit.
Speed	multiply(Duration v)	Calculate the multiplication of Acceleration and Duration, which results in a Speed scalar.
Force	multiply(Mass v)	Calculate the multiplication of Acceleration and Mass, which results in a Force scalar.
Power	multiply(Momentum v)	Calculate the multiplication of Acceleration and Momentum, which results in a Power scalar.
static Acceleration	of(double valueInUnit, String unitString)	Returns a Acceleration based on a value and the textual representation of the unit, which can be localized.
static Acceleration	of(double valueInUnit, Acceleration.Unit unit)	Returns a Acceleration based on a value expressed in the unit.
static Acceleration	ofSi(double si)	Return a Acceleration instance based on an SI value.
static Acceleration	ofSi(double siValue, Acceleration.Unit displayUnit)	Instantiate a Acceleration quantity with an SI or base value and a display unit.
static Acceleration	valueOf(String text)	Returns a Acceleration representation of a textual representation of a value with a unit.

Methods inherited from class org.djunits.quantity.def.Quantity

abs, add, as, compareTo, divide, doubleValue, eq, eq0, equals, floatValue, format, format, format, ge, ge0, getInUnit, getInUnit, getName, gt, gt0, hashCode, instantiate, instantiateSi, interpolate, intValue, isRelative, le, le0, longValue, lt, lt0, max, mean, min, multiply, ne, ne0, negate, of, product, reciprocal, scaleBy, si, siUnit, subtract, sum, toString, valueOf

Methods inherited from class java.lang.Number

byteValue, shortValue

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.djunits.value.Scalable

divideBy

Methods inherited from interface org.djunits.value.Value

isAbsolute

Field Details

ZERO

public static final Acceleration ZERO

Constant with value zero.

ONE

public static final Acceleration ONE

Constant with value one.

NaN

public static final Acceleration NaN

Constant with value NaN.

POSITIVE_INFINITY

public static final Acceleration POSITIVE_INFINITY

Constant with value POSITIVE_INFINITY.

NEGATIVE_INFINITY

public static final Acceleration NEGATIVE_INFINITY

Constant with value NEGATIVE_INFINITY.

POS_MAXVALUE

public static final Acceleration POS_MAXVALUE

Constant with value MAX_VALUE.

NEG_MAXVALUE

public static final Acceleration NEG_MAXVALUE

Constant with value -MAX_VALUE.

Constructor Details

Acceleration

public Acceleration(double value,
 Acceleration.Unit displayUnit,
 boolean useSi)

Instantiate a Acceleration quantity with an SI or base value and a display unit.

Parameters:

value - the quantity value expressed in the SI or base unit

displayUnit - the display unit to use

useSi - use SI value when true, use value in unit when false

Acceleration

public Acceleration(double valueInUnit,
 Acceleration.Unit unit)

Instantiate a Acceleration quantity expressed in the given unit.

Parameters:

valueInUnit - the quantity value expressed in the given unit

unit - the unit of the value, also acts as the display unit

Method Details

ofSi

public static Acceleration ofSi(double si)

Return a Acceleration instance based on an SI value.

Parameters:

si - the si value

Returns:

the Acceleration instance based on an SI value

ofSi

public static Acceleration ofSi(double siValue,
 Acceleration.Unit displayUnit)

Instantiate a Acceleration quantity with an SI or base value and a display unit.

Parameters:

siValue - the quantity value expressed in the SI or base unit

displayUnit - the display unit to use

Returns:

the Acceleration instance based on an SI value with the given display unit

instantiateSi

public Acceleration instantiateSi(double siValue,
 UnitInterface<Acceleration> displayUnit)

Description copied from class: Quantity

Instantiate a quantity with an SI or base value, and a display unit.

Specified by:

instantiateSi in class Quantity<Acceleration>

Parameters:

siValue - the value expressed in the base (SI) unit

displayUnit - the display unit to use for the quantity

Returns:

a quantity with the given SI or base value, and the given display unit

valueOf

public static Acceleration valueOf(String text)

Returns a Acceleration representation of a textual representation of a value with a unit. The String representation that can be parsed is the double value in the unit, followed by a localized or English abbreviation of the unit. Spaces are allowed, but not required, between the value and the unit.

Parameters:

text - the textual representation to parse into a Acceleration

Returns:

the Scalar representation of the value in its unit

Throws:

IllegalArgumentException - when the text cannot be parsed

NullPointerException - when the text argument is null

of

public static Acceleration of(double valueInUnit,
 Acceleration.Unit unit)

Returns a Acceleration based on a value expressed in the unit.

Parameters:

valueInUnit - the value, expressed in the given unit

unit - the unit of the value, also acts as the display unit

Returns:

ab Acceleration representation of the value in its unit

of

public static Acceleration of(double valueInUnit,
 String unitString)

Returns a Acceleration based on a value and the textual representation of the unit, which can be localized.

Parameters:

valueInUnit - the value, expressed in the unit as given by unitString

unitString - the textual representation of the unit

Returns:

the Scalar representation of the value in its unit

Throws:

IllegalArgumentException - when the unit cannot be parsed or is incorrect

NullPointerException - when the unitString argument is null

getDisplayUnit

public Acceleration.Unit getDisplayUnit()

Description copied from interface: Value

Retrieve the unit of this Value.

Specified by:

getDisplayUnit in interface Value<Acceleration>

Overrides:

getDisplayUnit in class Quantity<Acceleration>

Returns:

the unit of this Value

divide

public Dimensionless divide(Acceleration v)

Calculate the division of Acceleration and Acceleration, which results in a Dimensionless scalar.

Parameters:

v - scalar

Returns:

scalar as a division of Acceleration and Acceleration

multiply

public Force multiply(Mass v)

Calculate the multiplication of Acceleration and Mass, which results in a Force scalar.

Parameters:

v - scalar

Returns:

scalar as a multiplication of Acceleration and Mass

multiply

public Speed multiply(Duration v)

Calculate the multiplication of Acceleration and Duration, which results in a Speed scalar.

Parameters:

v - scalar

Returns:

scalar as a multiplication of Acceleration and Duration

divide

public Speed divide(Frequency v)

Calculate the division of Acceleration and Frequency, which results in a Speed scalar.

Parameters:

v - scalar

Returns:

scalar as a division of Acceleration and Frequency

divide

public Frequency divide(Speed v)

Calculate the division of Acceleration and Speed, which results in a Frequency scalar.

Parameters:

v - scalar

Returns:

scalar as a division of Acceleration and Speed

multiply

public Power multiply(Momentum v)

Calculate the multiplication of Acceleration and Momentum, which results in a Power scalar.

Parameters:

v - scalar

Returns:

scalar as a multiplication of Acceleration and Momentum