SFP Momentum and Impulse

Which of the following is the formula for momentum?

• p = mv

• M = mv

• F = ma

• g = mc²

Tags

NGSS.HS-PS2-2

Which of the following is the unit for momentum?

• kg·m/s

• kg·m

• kg·m/s²

• Momentum has no unit.

Tags

NGSS.HS-PS2-2

Which of the following is the formula for impulse?

• Ft

• ma

• mv

• mc²

Which of the following is a complete description of the momentum of an object?

• 6.7 kg·m/s, east

• 8.9 kg·m/s

• 1.5 kg/s, west

• 3.47 m/s², north

Tags

NGSS.HS-PS2-2

Calculate the momentum of a 55-kg running back moving westward at 10 m/s.

• 550 kg·m/s, west

• 550 kg·m/s

• 550 m/s, west

• 550 kg, west

Tags

NGSS.HS-PS2-2

With what velocity must a 0.48-kg softball be moving to equal the momentum of a 0.29-kg baseball moving at 23 m/s?

• 13.9 m/s

• 10.8 m/s

• 16.7 m/s

• 12.0 m/s

Tags

NGSS.HS-PS2-2

Which of the following objects has the greatest momentum?

• a 7.6-kg ball moving at 6.3 m/s westward.

• a 10.8-kg ball moving at 3.8 m/s eastward.

• a 3.2-kg ball moving at 13.3 m/s northward.

• a 5.2-kg ball moving at 8.8 m/s southward.

Tags

NGSS.HS-PS2-2

Consider this elastic collision between two spheres. They collide and then bounce apart. Sphere A has a mass of 8-kg. Sphere B has a mass of 5-kg. Before the collision, Sphere A is travelling to the right at 3 m/s and Sphere B is travelling to the left at 4 m/s. After the collision, Sphere A is travelling 2 m/s. How fast is Sphere B travelling after the collision?

• about 5.6 m/s

• about 3.2 m/s

• about 7.4 m/s

• about 8.1 m/s

Tags

NGSS.HS-PS2-2

You are calculating the momentum of a 2 kg toy car moving along the sidewalk at a speed of 0.5 m/s. What would happen to the momentum if you doubled the mass of the car?

• You would double the momentum.

• You would triple the momentum.

• You would half the momentum.

• The momentum would not change.

Tags

NGSS.HS-PS2-2

A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?

• 14.4 kg
• 1400 kg
• 144 kg
• 360 kg

Tags

NGSS.HS-PS2-2