Conservation of momentum

The total momentum before a collision is _________ the total momentum after a collision.

• equal to 
• less than 
• more than
• It depends on the type of collision

Tags

NGSS.HS-PS2-2

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.

• -2.5

• -10

• -18

• -45

Tags

NGSS.HS-PS2-1

A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg,  collides with a smaller box with a mass of 2 kg that is stationary.  The boxes stick together. What is the velocity of the two combined masses after collision?

• 0 m/s
• 4 m/s
• 8 m/s
• 12 m/s

Tags

NGSS.HS-PS2-2

An 1 kg object moving to the right at 2 m/s collides inelastically with a 1 kg object moving to the left at 2 m/s. The final velocity of both objects will be 

• 0 m/s
• 1 m/s
• 2 m/s
• 4 m/s

Tags

NGSS.HS-PS2-2

A 3,000 kg truck moving at +10 m/s hits a 1,000 kg parked car which moves off at +15 m/s. What is the velocity of the truck?

• 10 m/s
• 0 m/s
• 5 m/s
• 2 m/s

Tags

NGSS.HS-PS2-2

When two objects collide, the P_before is ____________ the P_after.

• more than 
• less than 
• equal to
• unrelated to

Tags

NGSS.HS-PS2-2

The Law of Conservation of Momentum states:

• The total momentum before a collision is equal to the total momentum after a collision.

• The total momentum before a collision is greater than the total momentum after a collision.

• The total momentum before a collision is less than the total momentum after a collision.

• The total momentum before a collision is not related to the total momentum after a collision.

Tags

NGSS.HS-PS2-2

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

• car

• Bike

• Both has equal momentum

• Cannot predict

Tags

NGSS.HS-PS2-2

What type of quantity are momentum and velocity?

• director

• reactor

• scalar

• vector

Tags

NGSS.HS-PS2-2

What is the unit for momentum?

• kgm/s

• kgm/s²

• Nkg

• Nm/s

Tags

NGSS.HS-PS2-2