Conservation of Momentum Quiz

What is the primary purpose of the spring in the example with the two carts?

• To add weight to the carts

• To keep the carts stationary

• To connect the carts to the ground

• To push the carts apart

Why is the total force of the system zero before the rope is cut?

• Because the carts are moving at the same speed

• Because the mass of the carts is negligible

• Because there is no acceleration in the system

• Because the spring is not exerting any force

What happens to the carts when the rope is cut?

• They move in the same direction

• They move in opposite directions

• They move towards each other

• They remain stationary

How is the conservation of momentum demonstrated after the rope is cut?

• The carts stop moving

• The total momentum becomes non-zero

• The total momentum remains zero

• The momentum of each cart is zero

What is the mass of each cart in the example given?

• 15 kg

• 20 kg

• 10 kg

• 5 kg

What velocity do the carts achieve after the rope is cut?

• 3 m/s

• 5 m/s

• 7 m/s

• 10 m/s

Why does the total momentum of the system remain zero after the carts start moving?

• Because the carts have equal mass and opposite velocities

• Because the spring absorbs all the momentum

• Because the carts have no mass

• Because the rope still holds the carts together

What is the momentum of each cart after the rope is cut?

• 25 kg m/s

• 50 kg m/s

• 75 kg m/s

• 100 kg m/s

What is the key takeaway about the conservation of momentum from this example?

• Total momentum is equal before and after an event

• Momentum is not conserved in moving systems

• Momentum is conserved only when external forces are applied

• Momentum is only conserved in stationary systems

What is the 'event' referred to in the context of this example?

• The cutting of the rope

• The spring being compressed

• The carts being placed on the track

• The carts colliding