Conservation of Momentum

What type of collision do the objects stick together?

• Inelastic

• Elastic

• Rubberized

• Gluey

What happens to the momentum of an object that triples its speed?

• It is reduced to one third

• It stays the same because force is mass times acceleration

• It increases to three times as much

• It lowers to half as much

Tags

NGSS.HS-PS2-2

When an bowling ball hits some pins, the bowling ball speed reduces. What happens to the momentum lost by the bowling ball?

• The pins gain the momentum lost by the bowling ball as they pick up speed after being hit by the bowling ball.

• The pins create their own momentum

• The bowling ball doesn't actually lose momentum

• There is no loss of momentum by the pins

Tags

NGSS.HS-PS2-2

When a 20 kg cart going 10 m/s crashes into a 10 kg cart that was sitting still and stick together, what speed will they be going after the crash?

• 3000 m/s

• 6.67 m/s

• 20 m/s

• 5 m/s

Tags

NGSS.HS-PS2-2

What is the mass of a car that has 33,600 kgm/s and a speed of 30 m/s?

• 1120 kg

• 120 kg

• 112 kg

• 1012 kg

Tags

NGSS.HS-PS2-2

What is the speed of a 12 kg rock with a momentum of 48 kgm/s?

• 60 m/s

• 36 m/s

• 0.25 m/s

• 4 m/s

Tags

NGSS.HS-PS2-2

If a 12 kg bowling ball going 4 m/s strikes a 9 kg bowling ball going - 6 m/s. They have an elastic collision and after the collision the 12 kg ball is going -3 m/s. What is the speed of the 9 kg ball after the collision?

• 3.33 m/s

• 5.5 m/s

• 7.33 m/s

• -5.5 m/s

Tags

NGSS.HS-PS2-2

How much momentum is lost in elastic collisions?

• All of the momentum is lost but the energy is conserved.

• Half of the momentum and half of the energy is lost

• None of the momentum is lost.

• One fourth of the momentum is lost.

Tags

NGSS.HS-PS2-2

How much momentum is lost in an inelastic collision?

• Momentum is conserved in all collisions

• All the momentum is lost

• Half of the momentum is lost

• On fourth of the momentum is always lost

Tags

NGSS.HS-PS2-2

What is the total momentum of a 1200 kg box moving at 3.5 m/s and a 200 kg box moving at -9 m/s?

• 4200 kgm/s

• 5000 kgm/s

• 2400 kgm/s

• 1800 kgm/s

Tags

NGSS.HS-PS2-2