Intro to Momentum

The equation to calculate momentum is

• p=mv

• p=1/2mv²

• p=mgh

• p=m/v

Tags

NGSS.HS-PS2-2

What is the unit for momentum?

• m/s

• kg

• N

• kg* m/s

• J

Tags

NGSS.HS-PS2-2

The momentum of an object depends upon the object's ___________&_____________.  

• velocity and acceleration

• mass and height

• mass and veloctiy

• mass and energy

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NGSS.HS-PS2-2

If both are traveling at the same speed of 60 km/h, which has more momentum: a large semi-truck or a small car?

• Truck because it has more mass

• Truck because it is moving faster

• Car because it is moving faster

• Car because it has less mass

Tags

NGSS.HS-PS2-2

What does the principle of conservation of momentum imply for a closed system?

• The total energy of the system is conserved.

• The total momentum of the system before an event is equal to the total momentum after the event.

• The total mass of the system is conserved.

• The total force acting on the system is zero.

Tags

NGSS.HS-PS2-2

In an elastic collision, which of the following is conserved?

• Only momentum

• Only kinetic energy

• Both momentum and kinetic energy

• Neither momentum nor kinetic energy

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NGSS.HS-PS2-2

What is required for two objects to have an elastic collision in a one-dimensional system?

• Their masses must be equal.

• They must collide head-on.

• They must not stick together after the collision.

• They must exchange their velocities.

In an inelastic collision, which of the following is true?

• Only momentum is conserved

• Only kinetic energy is conserved

• Both momentum and kinetic energy are conserved

• Neither momentum nor kinetic energy is conserved

Tags

NGSS.HS-PS2-2

The Law of Conservation of Momentum states that the total momentum of a closed system is:

• Increasing over time

• Decreasing over time

• Constant, if no external forces act on it

• Zero

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NGSS.HS-PS2-2

According to the Law of Conservation of Momentum, in the absence of external forces, the total momentum of a system

• Increases over time

• Decreases over time

• Remains constant

• Becomes zero

Tags

NGSS.HS-PS2-2