Impulse & Momentum

The SI unit for momentum is:

• N^.kg

• N^.m/s

• m/s^.N

• kg^.m/s

Tags

NGSS.HS-PS2-2

Choose the best answer below:

A large, slow-moving object has greater momentum than a smaller, slower object.

• Always

• Sometimes

• Never

Tags

NGSS.HS-PS2-2

Linear momentum is defined as the product of a system’s ______________ multiplied by its _____________:

• mass, velocity

• acceleration, mass

• acceleration, force

• force, mass

• force, velocity

Tags

NGSS.HS-PS2-2

What is Newton's 2nd Law of Motion?

• Action - Reaction. If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.

• F = ma. An object acted on by an unbalanced force will accelerate in the direction of that force, in direct proportion to the strength of the force, and in inverse proportion to the mass of the object.

• Inertia: An object in motion tends to stay in motion, while an object at rest tends to stay at rest unless acted upon by an unbalanced force.

Tags

NGSS.HS-PS2-1

Check ALL that apply.

Impulse is:

• The force that creates an acceleration.

• The change in momentum.

• the change in velocity that can be caused by a constant force over some discrete amount of time.

• A vector

• NOT a vector

Tags

NGSS.HS-PS2-2

Is momentum a quantity that can be conserved?

• Yes

• No

Tags

NGSS.HS-PS2-2

If a large train (F_train) collides with a car (F_car), which of the following statements is true? Check all that apply:

• F_train > F_car

• F_{train <} F_car

• |F_train| = |F_car|

• F_train = -F_car

Tags

NGSS.HS-PS2-1

For an object that gets slower, the Δp is:

• positive

• negative

• neutral

Tags

NGSS.HS-PS2-2

For an object that hits a wall and bounces back, the Δp is:

• positive

• negative

• neutral

Tags

NGSS.HS-PS2-2

A car of mass m, traveling at speed v, stops in time t when maximum braking force is applied. Using the same force, what time would be required to stop a car of mass 2m traveling at speed v?

• ½ t

• t

• √2 t

• 2 t

Tags

NGSS.HS-PS2-1