**Can momentum be a negative?** Momentum is a vector and has the same direction as velocity v. Since mass is a scalar, **when velocity is in a negative direction (i.e., opposite the direction of motion), the momentum will also be in a negative direction**; and when velocity is in a positive direction, momentum will likewise be in a positive direction.

**What does it mean to have a negative momentum?** Momentum is a vector quantity, given by the product of an object’s mass and velocity. **If the velocity of the object is negative, i.e. the object is travelling in what has been chosen as the negative direction**, the momentum will also be negative.

**Is a negative momentum less than positive?** **It does not**. Momentum, like velocity is a vector quantity and can therefore take positive or negative sign in any coordinate direction. According to the equation p = mv, the momentum is in the same direction as velocity.

**Can momentum ever be positive and negative at the same time?** **Yes, momentum is a vector quantity and changes in momentum therefore have a directionality**; in fact a change in a particle’s momentum is an impulse →I≈→F δt, it has the same directionality as the average force which acted on the particle. In this case that is indeed negative as the wall “pushes the particle back in.”

## Can momentum be a negative? – Additional Questions

### What happens when the change in momentum is negative?

**If the final momentum has smaller magnitude in the same direction or points in the opposite direction, then the change in momentum will have a negative sign in it.**

### Can an object have zero momentum?

**An object can have zero momentum when either its mass or its velocity is zero**. Since, negetive mass doesn’t exist, the velocity should be zero and thus, the object must be at rest.

### Why are some of the momentum numbers positive and some negative?

Momentum can be a negative as it’s a vector quantity. A positive momentum denotes that the object is traveling in the positive direction as defined by the coordinate system. A negative momentum denotes that the object is moving in the opposite direction. The momentum equation is p= mass x velocity.

### Is it possible for a baseball to have more momentum than a truck?

Terms in this set (24) Is it possible for a baseball to have more momentum than a truck? Explain. **Yes, because if the truck was not moving while the baseball was moving, the total momentum of the truck would be zero, therefore the baseball would have more momentum.**

### Do objects moving in opposite directions have the same momentum?

**The impulse and momentum change on each object are equal in magnitude and opposite in direction**. Thus, the total system momentum is conserved.

### Can an impulse have a negative value?

Impulse is a vector, so **a negative impulse means the net force is in the negative direction**. Likewise, a positive impulse means the net force is in the positive direction.

### Can velocity be negative?

Velocity: The velocity of an object is the change in position (displacement) over a time interval. Velocity includes both speed and direction, thus **velocity can be either positive or negative** while speed can only be positive. Another way to say this is that speed is the absolute value of velocity.

### Can a force be negative?

**A negative force is the force acting on an object against the applied force**. The applied force here is positive that is aimed in the right direction whereas a negative force acts in the left direction. An example of negative force is deceleration, where the speed of a moving object decreases due to gravitational force.

### Is impulse equal to momentum?

The impulse experienced by an object is the force•time. The momentum change of an object is the mass•velocity change. **The impulse equals the momentum change**.

### Can a bullet have the same momentum as a truck?

**Yes, for a bullet to have the same momentum as a truck, it must have a higher velocity because the two masses are not the same**. ANSWER: Yes, for a bullet to have the same momentum as a truck, it must have a higher velocity because the two masses are not the same.

### Is momentum a scalar?

**Momentum is not a scalar quantity**. Momentum is a vector, which means it has a magnitude and a direction. Linear momentum is the product of an object’s mass and velocity.

### Does momentum depend on velocity?

The amount of momentum that an object has is dependent upon two variables: how much stuff is moving and how fast the stuff is moving. **Momentum depends upon the variables mass and velocity**. In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object.

### What is the law of momentum?

Momentum Conservation Principle

Law of conservation of momentum states that. **For two or more bodies in an isolated system acting upon each other, their total momentum remains constant unless an external force is applied**. Therefore, momentum can neither be created nor destroyed.

### What factors affect momentum?

The amount of momentum that an object has is dependent upon two variables: **how much stuff is moving and how fast the stuff is moving**. Momentum depends upon the variables mass and velocity. In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object.

### Is momentum a force or energy?

Kinetic energy is a measure of an object’s energy from motion, and is a scalar. Sometimes people think momentum is the same as force. Forces cause a change in momentum, but **momentum does not cause a force**. The bigger the change in momentum, the more force you need to apply to get that change in momentum.

### Is momentum a power?

**Power and momentum are two physical quantities**. Power is related to energy, while momentum is related to motion. These two quantities are important in parameterizing the motion of an object.

### Who created momentum?

At this point, we introduce some further concepts that will prove useful in describing motion. The first of these, momentum, was actually introduced by **the French scientist and philosopher Descartes** before Newton.