The diagram shows two railway trucksAandBtravelling towards each other.The trucks are involved in an inelastic collision. They join when they collide and then move together.

The trucks move15m before coming to rest.

TruckAhas a mass of 16000 kg and truckBhas a mass of 12000 kg.Just before the collision, truckAwas moving at a speed of 2.8 ms^-1and truckBat a speed of 3.1ms^-1.

(a)State the quantity that isnotconserved in an inelastic collision.

(b) Calculatethe speed of the joined trucks immediately after the collision.

(c)Calculate the impulse that acts on each truck during the collision.

(d)Explain, without doing a calculation, how the motion of the trucks immediately after the collision would be different for a collision that is perfectly elastic.

Q? The diagram shows two railway trucks A and B travelling towards each other. The trucks are involved in an inelastic collision. They join when they collide and then move together. A B L! The trucks move 15 m before coming to rest. Truck A has a mass of 16000 kg and truck B has a mass of 12000 kg. Just before the collision, truck A was moving at a speed of 2.8 ms'1 and truck B at a speed of 3.1 m3'1. (a) State the quantity that is not conserved in an inelastic collision. (1) (b) Calculate the speed of the joined trucks immediately after the collision. (6) (0) Calculate the impulse that acts on each truck during the collision. (4) (d) Explain, without doing a calculation, how the motion of the trucks immediately after the collision would be different for a collision that is perfectly elastic. (2)